Journal of Entomology and Zoology V11

JOURNAL OF

ENTOMOLOGY AND
ZOOLOGY
r

VOLUME XL

1919

PUBLISHED QUARTERLY BY THE
DEPARTMENT OF ZOOLOGY OF POMONA COLLEGE
Cl-AREMONT, CALIFORNIA,

U.

S.

A.


CONTENTS OF VOLUME
Volume XI, Number 1
Chamberlin, Ralph V.
New I'olychaetous Annelids from
Laguna Beach, Cal., 1.
Hilton, William A.
Nerx'ous System of
californicum, 24.

Tlie

Caecum

Isoptera from the Clarenionl-Laguna Region, 42.
Diplopods from the ClaremontLaguna Region, 43.
Notes on the Seri)ent Stars of
Laguna Beach, 44.

Hyde, Eva

Amphipods from Laguna Beach,

XI

May

Snialler

collected

Shells

at

La-

guna Beach during the Summer

26.

of 1917. 45.

Volume XI, Number

Crampton, G. C, Ph.D,
Notes on the Ancestry

2

Annelids from Laguna Beach,
Evans, Alma

27.

lus, 28.

from

Laguna

Beach, 34.
Hilton, William A.
Central Nervous System of the
Sand Dollar Dendraster Excentricus Esh., 35

Ants from the Claremont-Lagmia
Region,

38.

Volume XI, Number 3
Kopods from Laguna Beach,

of

the

49.

Ledig, Ruth

Sturcture of Dolicli(i,gIossus pusil-

Opisthobranchs

Coleoptera,

(ieneral
Structure of Phoronis
I'acihca Torrey. 55.
Acarina from the Claremont-La-

gnna Region,

The Central Nervous .System

Corwin, Genevieve
Brvozoa
collected
at

Laguna
Beach in 1918. 40.
Phalangids from tlie ClareniontLaguna Region, 41.

of

Dolicho.glossus, 59.

Volume XI, Number 4
Gunthorp, Horace
Notes on tlie Behavior
.Social

39.

58.

Hilton, William A.

Wasp

of

tlie

I'olistes, 63.

Alexander, Charles P.
Biology of tlie North
Crane-Flies.

Dicrauaptvcha,

\'.

.\mcricaii
Tlie
Genus

(>7.

WilliamA.
The Central Nervous System

Hilton,

Nucula and Malletia,

75.

of


INDEX TO VOLUME
Acarina.

Hilton. William

58.

Ampliipods.
Ancestry.

liyilc.

26.

Isopods

49.

Ants. 38.

Ledifj,

Annelids.

1,

Bryozoa.

40.

Clianiherliii.

Coleoptera,

\'.,

Nudibranchs,

Crampton. G. C,

34.

T'halansids, 41.

49.

I'lioronis pacifica, 55.
I'olistes. 63.

67.

IJendraster excentricus,

35.

Sand Dollar.

35.

Serpent Stars.

43.

Diptcra. 67.

l-'.vans.

59.

24. 35. 59. 75.

Opistliobranchs. 34.

40.

Crane-Flies. 67.

l)Mlicli.i>los>us.

35.

55.

Niicula. 75.

1.

49.

Dicranoptycha,

24.

39.

R..

Nervous System.
R.

.

45.

Malletia. 75.

27.

Corwin. Genevieve,

Diplopods,

May.

I'.va

.\

XI

44.

Shells. 45.
28.

59.

.Mina. 28.

Gnnthorp. Hi)race.

Social

Wasps.

(/3.

Tectibranclis. 34.
63.

Tiptilidae. 67.

75.



New

Polychaetous Annelids From
Laguna Beach, California
RALPH

V.

CHAMUERI.IN

from Lagiina

interesling collection of annelids

In a vei>

transmilled

IJcacli

to

me

by Frof. Hilton, the apparently previously iindesoribed forms listed below

for study

As

are represented.

comprehensive report on the annelids of the region

a

further explorations and collecting

preliminary accounts of the

The

in the local

fauna.

Zoology

Cambridge.

at

in

is

new forms

contemplation,

am

1

follow

as are thought sufficient for their identification

these species are in the

t\'pes of all

to

giving here only such

Museiun

Comparative

of

POLYNOIDAE
IlahisyJiia

A

//. insii/iiis, i'alifnniitti,

and

l>ulchra.

It is

sp.

liitiiir

species proportionately broader over

all

nov.

than the usual forms of the

common

characterized by elytra not only closely imbri-

cated along each side but also broadly overlapping in the middle line throughout the

The

length.

axis running

elytra in general are unusually elongate in an obliciue direction, the long

from the outer end cephalomesad

edge broadly convex, the opposite one a

little

;

caudomesal

the outline subelliptic, the

incurved

at

middle.

The entire sur-

brown nodules

face of elytra subdensely covered with very small rounded

or tubercles;

within the middle region, just behind the eilge of the preceding overlapping elytron,
a

number

much

of

larger paler tubercles whicli in the type are present on all excepting

Eighteen pairs of elytra

Elytra extending to outer ends of parapodia.

the last pair.

Prostomium subangularly bulging on each side, the anterior eye at the angle,
the posterior eye removed far caudad, by about half the greatest width of the prostomium. Paired anterior prolongations of the prostomium very long, as long as the
median length of the prostomium back to level of posterior eyes, distally clavate. Median
ceratophore much stouter than the lateral prolongations and exceeding them by more
present.

than a third

rowing

in

length.

Median

tentacle long, nearly attaining end of palpi

;

slender, nar-

distad, only slightly thickened subapically, with the usual slender tip

moderate length.
middle of

light

Lateral

tentacles

region between

much

shorter,

their

tips

which

reaching only

to

is

of

near

proximal black region and subapical black ring of

Tentacular cirri resembling median tentacle in form, being narrowed
subapical enlargement slight; one or two fine setae emerging from

median

tentacle.

distad

with

distal end of parapodium proximad of tentacular cirrus.
The
have the same characteristic form as the tentacular cirri, narrowing continuously distad with the subapical enlargement slight.
First neurocirrus very
a

small

nodule

at

lotocirri in general

The

elongate, surpassing the parapodiinn.

other neurocirri slenderly cylindroconical,

narrowed into a slender tip and a little narrowed proximally; attached well toward
base of parapodium the end of which they fail much of attaining. A characteristic
feature is the elongate form of the nephridial papillae, these in the type as preserved
being mostly near three times as long as thick at the middle.

amber colored, numerous, arranged
ond

a

much broader

longitudinal

series

ventral one

with

five

or

in

six

in

Neuropodial setae dark
two continuous regions, a narrow dorsal one

the latter of

setae

in

which

the setae

each series.

form four

distinct

Notopodials moderate

in


2

Journal

number, the

tlorsal

The

poclimii.

(if

Kntiiniology niui

Z(i(iliig\'

ones short, the most ventral long, attaining the end of the ncuro-

elytra are greyish with dusky or brownish

inottlings.

Notocirri with

dark annulatioiis as usual.

mm.; width to end of setae, 14 inm. to end of parapodia,
7 mm.
Taken on Laguna Beach at Mussel Point (Hamilton coll.).
Type— M. C. Z. :, 13S.
Length, 42

;

10.8

mm.;

exclusive of parapodia,

IlaliisyJiiit

Among

otlier

I II

h mil lifer sp. nov.

forms known from the California coast characterized especially by

the strong tuberculation of all the elytra.

The

tubercles are mostly large and conical

though some are rounded and are confined chiefly

to

the

mesocaudal half and median

region of each elytron, a series of large ones ordinarily present along the caudal and

caudomesal margin; in the first two or three pairs of elytra the tubercles of the
median region especially large, the tubercles on the first pair occurring on the anterior
pari

as

well;

ectal

margin of

elytra

strongly fringed or ciliatc.

subcircular but with margin of ectocephalic side flattened or

Elytra

in

contact or nearly so at

median

line

but not there at

to

XXV

and then

Elytra

part a

II, IV',

all

general

in

little

incurved.

overlapping. Pairs

IX and so on

on XXVI, XXVIII, XXX, XXXI, and XXXIII. The

rf elytra eighteen, these being present on somites

ones

in

V, VII,

alternate
last three

Anterior pair of eyes near middle of length of
somites bear notocirri.
prostomium proper, larger than posterior pair which are a little closer together and
Lateral prolongations of the prostomium in front
are well removed from the others.
which bear the lateral tentacles only a little shorter than the median ceratophore
^etigerous

though much more slender.

Median

tentacle shorter than the palpi,

moderately en-

larged and stronglv rounded subapically and with the usual slender tip or filament

which is comparatively short. The lateral tentacles of similar form but much shorter
and more slender. Neurocirri of first normal segment large, resembling a notocirrus.
The other neurocirri much shorter, subconical, constricted at base and prolonged into
Anal cirri
a slender but short tip; attached near base of neuropodium in each case.
Neuropodial setae of usual general
similar to notocirri but much longer and stouter.
form, amber colored with dark tip, arranged mostly in two or three, usually uneven,
The notopodial setae fine, numerous, the longer ones not falling
subvertical series.

much

short of or reaching the ends of the neuropodials.

The

nephridial papillae oc-

cupv the ordinarv position; thev are small and uiuisuall\' short. The color of the
Antennae, lentacular cirri and notocirri banded at
elvtra uniform greyish brown.
base and distally with black.

Length, 23 mm.; width exclusive of parapodia,
somewhat more so caudal.
Taken at Laguna Beach under stones. (1917)
Type— M. C. Z. 2, 139.
Ual'isyiina

Iriitsi'tti

sp.

3

mm.

.'\

little

narrowed cephalad,

nov.

Bod\' strfinglv and contiruiousK' narrowetl caudad.

Prostomium wider than

deeply bilobed, the median tentacle inserted deeply in the intervening incision.
extended forward into peaks which, however, are constricted at base so as

long,

Lobes
to

give

Anterior eye free on
pppearance of more or less distinct ceratophores, these short.
each side, the caudal one much farther mesad and overlapped by the peristomiuin.
Tentacles short, the rneilian line a little longest and about eipialling the I'alpi; in


Pomona
cacli

sleiuler

a

above the moderate subdistal swelling about

lip

remaining part of the

the

College, Claremont, California

Tentacular

style.

neurocirrus, the latter less clavate below the slender

first

shortly subfusifortn

shorter,

with filiform

precisely at middle of length of the
at

similarly

cirri

base of neuropodia

tip.

eiiual

length

in

formed, as

is

Other neurocirri much

Notopodia reduced

neuropodium.

to

the

also

almost

characteristically inserted

short;

tip

3

to

small lobes

above, these lobes smooth, bearing no emergent setae

the

in

number; these are
entire, and acute; the
surface appears smooth, the seriate spinules being exceedingly minute and easily
overlooked
The notocirri have the usual enlarged distal end
pale straw colored.
baring a slender tip and a little exceed the neuropodial setae. The elytra have an
average neuropodium the setae are mostly six
coarse, with subhastate heads the tips of which are curved,
In

type.

the

in

;

arrangement

in

general similar

to

normal

that

in

Halosydna so far as that usually

goes, but twenty-four pairs are present, these occurring on somites,

II,

IV, V, VII, IX,

XV, XVII, XIX, XXI, XXIII, and XXVI, XXVIII, XXIX, XXXI, XXXIIl,
XXXV, XXXVII, XXXIX, XLl, XLIII, XLV, and XI.VII. The elytra are character-

XI, XIII,

istically

widely imbricated

as

so

completely

to

and prostomium.

cover the dorsum

out far laterally so as wholly to overlap the parapodia proper though the

They extend

The

ends of the setae and notocirri extend beyond the edges.

elytra

have the surface

As preserved, the type has no
definite color markings; color greyish, the elytra of weak fulvous cast.
Length near 22 mm.; greatest width exclusive of parapodia, 2.8 mm.; to ends of
farapodia, 5 mm.; to ends of setae, 6.S mm.
Taken as a commensal on a sea-urchin (Metz, July 20, 1911).
Type— M. C. Z. 2, 140.
wholly smooth and the edges are also not fringed.

seiosior sp. nov.

l.i'l>uliiniitus

loi'loris and other species recorded from
North and South America by the greater length and coarseness
of the notopodial setae, these being stout pointed spines often nearly attaining the ends

The notopodials,
of the neuropodials and thus exceeding the latter in actual length.

Readily distinguished from L. s
the

Pacific coasts of

however, are obviously more slender than the neuropodials; they are much more
numerous than the neuropodials and form a dense, subcylindrical, spreading group.
The elytra are characterized by bearing over their free portions numerous high and
stout, conical,

hard or chitinous tubercles which

the very different rounded

however, much

are,

less

dense than

eminences of sijuamatiu, these cones often roughened; be-

tween these high cones, and over the covered part of the elytra as well, numerous small
rounded tubercles or nodules; much more slender and shorter, erect, conical papillae

present on the outer border of at least

could be delected

in

the types.

The

some of the

elytra

elytra but no truly ciliate fringe

are long, subelliptic in outline,

and are

arranged either with axis nearly longitudinal or very obli(|ue, the most anterior elytra,
however, subcircular. Eyes on each side unusually widely separated, the anterior one

low on

side,

a

little

ectocaudad of base of anterior process.

prostomium about

four-fifths as long as the

Lateral

much more

tentacles

mentous
of

its

tip,

tip;

slender

Anterior processes of

median ceratopliore and much more

than

the

median,

and,

exclusive

of

slender.
the

fila-

falling short of attaining the middle of the style of the latter exclusive
styles

biannulate

with black

Median tentacle surpassing palpi
more so than that of the laterals,

in

as

freiiuem,

length;

rcntacular

the

subapical
cirri

basal

swelling

also

black.

pronounced,

much

process

and notocirri similar

in

form

to


Journal of Entomologv and Zoology

4
median

(lie

Anal

tentacle.

cirri

proportionately

somewhat

shorter than

Color of venter and parapodia grey; elytra at present grey over a
Setae dark

amber

nearly ferruginous, darker than usual

to

in

sr/iiiimaliis.

ground.

ftilvoiis

A

in srjuamatiis.

paratype

has elytra fulvous of dilute ferruginous cast with black mottlings.

Length, 18

mm.

Type— M.

C. Z.

141.

2,

Lf/>iJ'Hiotits Ictus sp. no\'.

A

species characterized by

surface wholly smooth or,

at

its

rather thin, easily detached elytra which have their

most, showing a few scattered minute points;

closely

fringed along the outer margin, about the cephaloectal region, and for a short dis-

Elytrophore attached cephaloectad of middle. Anterior

tance along the anterior edge.

margins of a t\'pical ehtron onlv weakly convex, the cephaloectal corner subrectangular though rounded; caudal margin strongly convex, the inner end of elytron
Elytra transverse
like the end of an ellipse but with lower margin the more oblique.
Prostomium of usual
or but little oblique, strongly overlapping in the middorsal line.
and

ectal

Eyes large and black, the anterior ones near middle of main region

general form.

of prostomium, the posterior ones closer together
a

lateral,

retained

type.

in

base of the distal swelling

to the

cially by

is

an unusually long slender

parapodium

of

the

and

middle of

tip

which

is

as long as the rest of the style.

when

in

usual

the

The

position;

bent back reaching proxi-

usual vertically elongate patch,

in the

presenting a narrow dorsal half and a broader ventral one.
patch

which

Notocirri also characterized by their long terminal filaments.

style.

Neuropodial setae light amber-colored; arranged
the

tentacle,

style

scarcely longer than the basal process, and espe-

tentacular cirri of usual form, the filiform tips long,
iiiad of

short cylindrical

a

segment bears two prominent setae

first

Only one

caudal end.

at

This characterized by

In the ventral part of

normally four longitudinal rows of three setae each, while the narrower

upper region shows also about four rows but with only two or one
setae have the usual general structure.

end of neuropodia and sometimes nearly
are

tvpe the elvtra

light

brown.

in

each.

The

Notopodials numerous, reaching beyond distal

The

to

middle of the neuropodial

tentacles

In the

setae.

and notocirri ringed with black as

common.
Length,
6

mm.; width

13

exclusive of parapodia,

3

mm.; width

to

tips

of setae,

mm.
Dredged.

Type— M.

C. Z.

2,

142.

PllVLLUDUCIDAE
Ilespeynl>hyllum gen. nov.

and Auslrophylhim but differing especially in
having the ventral cirrus of the second segment fiattened atul foliaceous ami strongly
asymmetrical. It is like i\o/ii/>/iylliim and unlike .liistro/i/iylhi:n in haviuL' the first segSimilar

in

ment dorsally
Gennlype.

general

to

\ntn/>//ylltim

reiluced.

—

//.

tectum

sp.

nov.

ledum

II cspcriil'liylliitn

The
of a

first

segment dorsally

thin or foliaceous

reduced distally

to

a

reduceil.

\'entral

and asymmetrical form.

poinlcii

lip,

ihal

of

1

sp.

nov.

tentacular cirrus of second

Other tentacular

aboul half as long as

cirri
llic

somite

subcylindric,

dorsals of

II


Pdinona

ClareiiKint, California

Collfsif,

5

and III. Paired tentacles short, proximally thick and convexly bulging, alnuptly narrowed to an acute tip with incurving sides. Unpaired tentacle situated between eyes
in line connectnig their centers, nearly of same length and size as the first tentacular
annulate.
Prostoinlum shortly subcirri and about as long also as prostomium
With very large cirri of which
cordate, well rounded in front, incurved caudally.

;

widely overlap

the dorsals

prostomium normally
a

parapodium

typical

wholly concealed from above.

The

extending

from

by

attached

is

and thus completely cover the dorsum, the

the middle

in

also being

broad

a

base

neurocirrus of

pronounced

a

ventral swelling or flange (neurocirrophore) across the caudal sid of the parapoilium
to

dorsal edge and projects farther dorsad of the parapodium than

its

widely rounded;

dorsomesal end

The

free edge evenly rounded.

ference and
its

notocirrophore

lobe on

its

ectal side; the style

is

the

rounded bodv arising from
notopodium as a proportionately

attached about

caudal half-circum-

its

mesal limb widely overlapping that of the opposite notocirrus and
Surface of

its

Number

of segments in

Body narrowing caudad, becoming narrow and pointed
Proboscis unknown.

near seventy-three.

Length, 19

mm.

Type— M.

C".

A

Moore

in

life,

being also retained

this color

paratype has a greenish

in

the preserved type speci-

This species suggests Notopliyltum imhrualum

cast.

the large imbricated notocirri covering the

in

type,

at posterior

143.

Z. 2,

Dredged. Brown

one

ectal

and of somites, especially ventrally,

cirri

densely covered with very fine brown dots or points.

men.

with the

broadly sulircnitorni with the free margin coarsely crenulate or wavy,

is

overlapping the neurocirrus.

end.

the

veiitrad,

long,

a thick

in

parapodium proper and showing

the base of the

much smaller

much broader dnrsoventrally than

dorsum but

in

the latter all

the

tentacular cirri are of the elongate, symmetrical, evenly tapering form charactcerislic of
its

numThe neuropodium

genus. Imhiicalum similarly presents nuchal appendages, but these are three in

ber on each side and sleniler, instead of two broad, subelliptic lobes.
is

narrowed instead of broad,

distalK'

head

the

is

ditferentiv

and

formetl.

\arious

other ditferences are present throughout.

Sti'gtjna

This

is

color after preservation in alcohol.

ment

lieing

iio\'.

It

agrees

normally developed above and

in

Prostomium

a

rounded

little

in

from the basal
paired ones

life

and also retaining

this

seg-

first

from the prostomium though not

distinct

btit

longer than

part.

wide,

narrowed

and bearing the four

front

Unpaired

nearly as long.

anteriorly,

tentacles,

Eyes not detected.

other tentacular cirri longer and filiform.
exceptionally

subconical.
subconical.

thick

Neurocirri

in

proportion

Notocirri
to

set off

\'entral

and much
in

sides

convex;

by

weak

a

a

short

constriction

more slender than

the

tentacular cirrus of
like the notocirri.

II

The

outline lanceolate, character-

width so as

much smaller; similarK

Hoil\* slentler,

is

tentacle situated well caudad,

of a thick, leaf-shaped form, sublanceolate in outline

istically

in

general with Slcjijoa, the

separated as usual, suggesting a tendency toward the llypoeiitalia condition.

so cleaiK

lobe,

(/ruiilior sp.

small and slender form noted as green

a

at

times to appear nearly

proportionatel\'

thick

and

at

slrongly narroweil fniin the middle to\%artl both enils.

times

The


journal of

6

and Zoology

Ent(im(>lojj;y

Number

proboscis densely and uniformly papillose throughout.

of

segments near one

hundred and twenty-three.
Length, about 36

Type— M.

C. Z.

mm.
144.

2,

Siiji'

Corresponding closely

Green

genotype.

slender as

in

color

nov.

sp.

(Griibe), the
S. macroceros
brown.
Tentacles long and

with

characters

straw-yellow

of

instead

median equalling

mairiiceros, with the

in

alifdrn'ii'iisis

<

general

in

to

the others in length

be proportionately larger than

to

at the sides

where

The

macroceros.

in

first

segment

and inserted

The

close to the base of the latter; tips of tentacles slenderly attenuated.

eyes seem

reduced above

is

prostomium bulges back on each side; but the middle region

the

well developed, extending forward on the base of the head as a rounded lobe or

is

\'ery easily distinguished

flap.

from macroceros and other known species by the form

of the ventral tentacular cirrus of the second segment which, in place of the ordinarily

foliaceous form,

lanceolate

hirge rounded lobe
a

in

is

very strongly expanded above the base, presenting a

front and an abruptly

much more

The parapodia

whole irregularlv twisted.

ver_\'

slender

with the blade as

tip,

similar to those of the genot\'pe;

but the setigerous lobe less acutely and less deeply notched and rather broader across
the end

along the setigerous

more evenly

distally,

The

line.

rather more slender anil

notocirri

on each side distally so as

not incurved

to

narrowed

leave an elongate

tip set off from the rest.
The neurocirri similar but more asymmetrical, the upper
margin straight or concave, the lower convex. Anal cirri missing. Proboscis not
protruded. Total number of segments in the type, which is complete, sixty-eight.

Length, 10

mm.

Type— M.

C. Z.

145.

2,

Taken under stones.
Moore has described K alalia
\entral tentacular cirrus of

cannot be properlv referred

II

(Siyc)

hijoliata

from Monterey Bay; but as the

described and figured as cylindroconical, that species

is

as

to SitjC

.Inaitides

now

restricteti.

lieterocirrus sp. nov.

Close to A. mucosa (Oersted) in the characters of the proboscis, having similarly
rows of papillae proximally on each side with the number in each series normally
nine or ten, but distinct in the form of the cirri. The three first pairs of normal foli-

six

aceous notociri'i

much smaller than

very broadly and evenly
not conspicuously

narrowed

the succeeding ones

the distal

elliptic,

as in

mucosa.

end of
In

the

tlie

and different

third,

e.

in

shape, being

broadly rounded,

g.,

average parapodia of the middle

region of the body the neurocirri are obviously broader with the tip stouter and less
acute; and the notocirri, while in general

with

a

more pronounced ventral

lobe,

duced, while the distomesal corner
the distal

end appears

less.

The

is

more

each side

at

rouiuled,

similar

in

form, are more elongate

angle more acute and more pro-

and the proportionate width across

prnstnmiimi very broadly cordate, notched or con-

stricted at the sides near the anterior third

inserted on

somewhat

the distoectal

which

is

distally broadly

rounded; tentacles

or just distad of the constriction, conical

and of moderate

length; caudal margin conspicuously angularly incised at middle and there eitibracing
a

conspictious

nuchal papilla.

incomplete caudally,

at

F.yes

about twice their diameter apart.

present consisting of ninety-five somites and

The

having

type
a

is

length


Pomcina College, Clarenioiir. California
of 35

mm.

with a

maximum

7

mm.

exclusive of parapoilia, of 2

widtli,

The body

at

present has a purplish tinge.

Dredged

at 10

Type— M.

fathoms on Aug.

C. Z.

27, 1917.

146.

2,

SVLLIDAE
Ty/«uyllis hella

nov.

sp.

est anteriorly,

{Moore) and related forms in the
The prostomium is broadnarrowing caudad and munded forward a little at middle in front. A

characteristic

featlire

Differing from armilliins

(Muller),

alti'itiata

form and relations of the prostomium ami

appendages.

tentacles

three

the

that

is

its

are

in

a

transverse

along the

line

median being thus inserted far in advance of the posterior eyes. A
median longitudinal furrow extending forward from caudal edge to base of median
tentacle.
The anterior eyes much larger than the posterior and farther apart, each
somewhat transversely elliptic and located far forward at base of lateral tentacle
on its ectal side. The median tentacle about two and a half times longer than the
prostomium; in the type composed of twenty-one articles; only a little narrowing over
anterior edge, the

the distal

Lateral tentacles considerably shorter than

region.

longer and consisting of about thirty-four articles.

somewhat

median.

the

Inferior

much

length to the median tentacle, the upper one

tentacular cirrus about equal in

conical distally or sometimes a

little

Neurocirri slender, subcyliiulric,

clavate, surpassing end of parapodium.

Notncirri in anterior region alternating in length, the long ones surpassing the width

of the body proper and consisting of about thirty-two articles

posterior

the

more

obtuse,

region.

Appendage

than

alternata,

in

while the short ones

Notocirri becoming shorter and essentially uniform

embrace only near eigtheen.

of setae

with subapical

larger

tooth

inaking a wider angle with

the

always conspicuous; the serrations proximad of the tooth
body is proportionately rather wide and is depressed or

flattened,

posterior region but retaining there the depressed form.

Number

one hundred and forty-five.

type, near

rior region crossed transversely by

20

Width
mm.

in

Type— M.
Taken

The

anterior

region,

V. Z.

147.

at low

type

is

a

2,

two

fine

apical

and

in

stouter,

and

tooth,

The

and rather long.

narrowing

in

the

segments

in

the

of

General color yellowish; each somite of antefine

exclusi\'e

complete lines of reddish brown color.
parapndia, about 1.25 nnn.

of

;

length

near

tide.

female turgid with eggs.

It

is

remarkable

in

presenting at the same

lime a well-developed collateral bud from the ventral surface near the begiiniing of
the posterior third.
I'ionnsyltis I'iijmnilala sp. nov.

Somewhat resembling

eluiiyata (Johnson), which also occurs in this region, hut
dorsum pigmented throughout, being black or slatv with pale
segments and dividing each of the latter transversely excepting

/'.

differing in having the
lines

across

between the
the

technical

middorsal

details

region.

The pigmentation may sometimes

readily distinguished

from that

species,

e.

g.,

be
in

verv

the

dilute.

differeiu

In

form

appendage of the setae, this being obviously more elojigate and erect and promore slender. Two or more dorsal setae differ in having shorter, more
strongly curved appendages which are wholly smooth on the concave edge instead

of the

portionately

of being pidiinate to beyond middle as in the others.

Prostomium rather short and


Jduinal of Entomology and Zoology

8

Palpi thick the ectal lobe small as compared with the principal or mesal one;

broad.

Eyes small, transversely elongate and often curved, the two on

imited only at base.

each side close together and sometimes almost fused, with the posterior one well inesad
of but only a

little

caudad of

between the two eve groups
of

eighteen

stomium

median

twenty-three

to

the

Median

anterior one.

short

Each paired

articles.

tentacle

Lower tentacular

tentacle.

corner

at

about equalling a tentacle

cirrus

dorsal longer, both of similar form.

The

or subtrinagular lobe or flap at middle above.

pro-

the

rounded

a

in

attached

notocirri

of

size to the

length,

in

segment extending forward

First

composed

;

form and

front of eye-group of corresponding side; similar in

in

midway

situated

tentacle

longitudinal farrow dividing prostomium

a

in

above bases

numerous short segments; much longer
than the tentacles, each average one when laid back along body ordinarily passing
Body
Neurocirri short, stout, fusiform.
over three or three and a half segments.
Type
slender, narrowed moderately at the ends, elsewhere of nearly uniform widtli.
composed of seventy-three segments.
of

parapodia as usual;

of

mm.

Length, near 20

Type— M.

composed

long,

C. Z.

2,

148.

Littoral zone.

rionnsyUis luiiJa
ReaiiiK- differentiated from P. rlont/eiln,

appearance,

having

in

more elongate and

resembles

it

in

its

pale, translucent

appendage of setae more typical, being of
form which also differs from that of fiiginenlata.

the distal

erect

differing conspicuously

latter

nov.

sp.

which

tapering distad, with apical

in

appearance

region

in

lacking

decidedly

From

dark pigment.

all

slender and pointed;

a

long,

the

Notocirri

exceeding the width

body and consisting of up to forty-five articles. Differing from />igmeiitala in
the form nf the neurocirri \vhich are more uniform in diameter, subc\'lindric rather
normally extending more or less beyond the tip of the parapodium.
tliaii fusiform;
of the

Prostomium

Eyes reddish; those of

short.

mesad
farther forward than

eve on each side almost directly

median tentacle

first

of the
in

first

pair

larger than the second; second

but only a

pigmentala. well

little

in

caudad of

front

of

the

it.

The

eyes,

its

anterior edge being nearly in line with the caudal margins of the paired tentacles;

composed

of twenty-eight or

more slender; composeti

I'lso

narrower
body

is

than

distally

in

evidently slender.

more short

is

near

Type— M.

1

Palpi fused at base as usual;

The types are incomplete caudally but the
One specimen 8 mm. long consists of forty-three seginents;
fujmenliiln.

and a second, somewhat thicker

The width

Paired tentacles much shorter and

articles.

of about twenty articles.

;

one, of nearly the

same length

consists of thirty-seven.

mm.

C. Z. 2, 180.

Ilesperniin gen. nov.

Palpi
boscis

thick,

unarmed

fused
(?).

at

base only

to

miildle

of

length.

Tentacles three, attenuated, more or

I'hnrynx

less

straight.

Pro-

obviously jointed. Eyes

two pairs; large. Tentacular cirri two pairs. Parapodia uniramous witli setae all
compoimd, or in the epitokous phase with long simple natatory setae in notopodia of
Neurocirri
middle region of body. Appendage of compound setate short, bideniale.
Notocirri on side of body alio\c parapodia; filiform; more or
present, thick, roundeil.


Pomona

A

less segrnentccl.

membrance

large <|uaclrate

—

//.

<

more

stout for a syllid,

continuously narrowing caudal

dorsum

pale

with

blackish,

is

anterior edge

alifurniensis sp. nov.

Hesperalia

Body rather
riorly,

projecting from

flap

iir

9

forward over caudal region of prostomiiim.

of peristomiiim

Genotyl>e.

College, Claremont, California

to

nov.

as in Hesionidae; broadest

and deepest ante-

The

the pointed posterior end.

transverse

lines

the

in

color of the

furrows and

intersegmental

Parapodia and cirri
lens thus appears double.
and the venter either similar or approaching the dorsum in
color.
Prostomium very short, sunk in the first body ring and almost completely
overlapped by the (juadrate flap from the latter, this flap extending over the bases of

which under the

bisecting each somite

typically pale fulvous

the tentacles in the type.

Palpi stout, presenting two main lobes fused

their apices

to

and on each of these an ectodistal lobe projecting ventrocephalad, these
distal lobes wholly free from each other. Tentacles appearing nearly smooth; tapered;

Eyes large; in type orange colored; the
the median exceeding the lateral in length.

or nearly so,

two on each side contiguous or nearly so; posterior ones nearer together, each beneath
edge of the quadrate peristonial flap, while the anterior ones are in line with base of
median tentacle. Tentacular cirri of same form as tentacles but longer. Neurocirri
Natocirri long, filiform, tapering distad, weakly ringed;
thick, short, distally rounded.
showing a tendency

to

alternate

in

height on the sides of the body, the

duisad than the second, the third than the second

notably farther

first

being

and fourth,

etc.

appendage short, falcate, with tip simple, but a slender tooth
near middle of curved edge. Segments short, crowded, near one hundred in number.
Setae numerous;

the

Length of type, 21 mm.; greatest width,

Type— M.

C. Z.

Taken

August,

in

2,

2.2

mm.

149.

1914.

Ilrsperalia nans sp. nov.

The

type of this species

is

in

bears notopodeal fasciae of long,

the epitkous phase.
fine,

The middle

region of the body

simple, natatory setae in addition to the com-

pound neuropodials. The appendage of the compound setae differs from that of
in having the accessory tooth farther distad, well beyond the middle
of the concave edge, whereas in the other species it is normally rather proximad of the
middle.
In the present species the prostomium is proportionately larger, less covered
by the peristotmial flap which does not extend over the base of the median tentacle.
The palpi are not fused so far distad, being unitd only at base; they present below
(aliforniensis

on each
lenses;

a

large distal lobe similar to that

large;

centers of the

stomium.
the

larly

each

short and

anterior eyes;

at a point

in

pointed,

Median

attenuated

to

a

black dot near middle.

having the dorsum

in

general

the

in

line

with the

width of the pro-

shorter than the median; each attached in front of

little

midway between

and run out

tentacle

shorter than

the latter

and the anterior

longer than the tentacles, attenuated distad, pointed.

witli a

Eyes with prominent

the otiier species.

each side sub-contiguous.

Paired tentacles a

median

much

those on

light,

rather fine point.

The

eye.

Tentacular

cirri

notocirri are all simi-

Neurocirri very thick, conical,

Contrasting with the preceiling species

in

color in

fulvous, in part slightly dusky, with a series of

dark, blackish, transverse lines across dorsum, there being four somites between each

two dark

lines.

The bodv

is

narrowed toward both ends; venter

flat

and dorsum


10

Jouinal

is

imcertain, but

C. Z.

2,

Dredged August

27,

Like Strif
in

type the

tlie

number

near seventy-five.

is

Greatest width, exchisive of parapodia.

Type—M.

Zoology

:ind

Because of the broken condition of

strongly arched; hesioniform.
of segments

Hlntomology

(if

mm.

1.5

15(i.

1917.
('(impi'iyllis gen. nov.

lacking nuchal flaps such as characterize
in

imarmed and

liaving the pharynx strongly sinuous and

having only composite setae and

mhlynsyllis.

.1

It diflfers

in

from the former genus

having these of the ordinary structure, the
Eyes two pairs

in

.ippendage of a simple, fringed form not covered by a membrane.

Tentacular

instead of three.

— C.

Genotype.

cirri

two

These, as also the tentacles and notocirri,

pairs.

Neurocirri attached proximally.

short, articulated.

minor

sp. no\'.

Camt>esyUis minor

The

form

type of this small

The

only

is

2.5

nov.

sp.

mm.

The pharynx

long.

is

strongly

and are fused for most of length
though a median furrow or sulcus above and one below run to base; projecting forward; together they narrow distad, with outline triangular; shorter than prostomium.
Eves two pairs, well separated, subequal, forming a nearly straight transverse row a

sinuous.

palpi

Median

front of the peristomium.

little in

eyes;

short,

short,

each

a

little

tentacle attached far back between posterior

exceeding prostomium and palpi together.

attached

cirri

with

corner

cephaloectal

at

Tentacular

between them.

throughout

contiguous

are

and notocirri

the

Lateral tentacles also

prostomium bulging forward

also short, the latter in anterior region

about efiualling half the width of the body proper and not extending
tips of the setae; joints short,

near

slender, reaching ends of parapodia.
its

number.

fifteen or less in

much be\ond

the

Neurocirri subcylindric,

Setae transparent; end of shaft but

enlarged,

little

appendage long and slender, the tip curved, the edge
Body ventrally flat, convex dorsally, strongly narrowed caudad.

articular edge very oblique;

strongly fringed.

Taken

a

in

Type— M.

colony.

sabellid

C. Z.

2,

151.

NEREIDS
iXereis lalescens sp. nov.

Allied to
.ible

A'.

(CJrube)

I'exillosa

but

much smaller

a

species

readily distinguish-

purplish markings on the prostomium and

superficially through the presence of

anterior segments, by the form of the appendages, and particularly by the presence on

region

V

cpitokes.

of the proboscis of a single large conical tooth such as

The prostomium

is

marked above by

narrow median longitudinal yellow
on

each side

a

line.

On

Eyes black.

purplish stripe

transverse

along

the anterior segments, above

and

anterior

border and across the dorsal region, a shorter but broader stripe
ihe

middle of segment.

The body otherwise

those of each side very close together.

present in various

is

large purplish area germinate by a

a

yellowish.

one
a

along posterior
little

in

front of

Eyes exceptionally large, and

Tentacles close together, slenderly cylindrical,

moderately narrowing distad, shorter than prnslomitnn ami not extending beyond end
Paragiialha in general as in vrxilli/sii ; area I with but a
of proximal joint of palpi.
single tooth;

II,

111

and

exceptionallv large tcmlh

with numerous teeth

I\'
;

\

I

with four teeth

in a

in

a

patch on each;

c|uadrangU';

\'ll

and

V with
\'lll

a

single

with teeth


Pdiiiona Collcfie, Clareniont, California

in

band across ventral and

a

smaller than the distal
than

the

also

typical

in

vexilloja.

to

divided by

more

each other;

parapodium presents three

Number

transverse furrow.

Tentacular

half the length of the dorsals, which

or

less

flattened;

A

cirrophores short.

is

becomes more slender

stoutest, but

the

in

Both notocirri and neurocirri proportionately very slender.

region.

about as long as the dorsal tentacular

cirri

a

stout conical lobes additional to the setigerous ones;

of these the dorsal one in the anterior region
posterior

prostomium and

Peristomiiim shorter than

the ventral ones subequal, less than

nearly equal

proximal ventral teeth are

lateral surface in wliicli the

next two somites combined;

cirri short;

are

as

11

.Anal

flattened.

cirri,

of segments, sixty-two.

Length of

types, 20 to 33

Type— M.

C. Z.

Taken among

2.

mm.

152.

hydroids.

Nereis mediator

This species also resembles
smaller form.

It

is,

far

so

tinguishable from that species

as
in

sp. nov.

though apparently

z'exillosa,

A',

evidence at present accessible

to

normally much

a

me

indicates,

dis-

having a narrow band across the anterior border of

band of \'II composed of much finer denticles instead of having the anterior
and the posterior ones reduced.

The paragnatha are fewer than in
vexillnsa, those of II, e. g., being in fewer (usually three), less oblique and more separated series and those of VI in all the typical specimens being three in a triangle or
four instead of from six to nine or more in a crowded patch.
Xo colored markings.
The tentacles proportionately thicker and obviously closer together. Tentacular cirri
shorter.
N'otocirral laminae of the middle and posterior regions much less elongate
and flattened with their ventral conical lobe much more pronounced throughout, more
as in the smaller specimens of vexillnsa.
Anal cirri short. Number of segments up
the dental

teeth

to

large

seventy.

Length,

to

Type— M.
This
A'.

is

I'exillosa

60

mm.

C. T.

2,

153.

doubtless the
in

same form

as recorded by

Proc. Acad. Sci. Phil., 1909,

species; but as all the specimens

which

244.

p.

have

Moore from San Diego

Dr.
It

is

undoubtedlv close

to

as.

that

and apparently also those studied
above mentioned from specimens of
vexillnsa from more northern localities on the Pacific coast, etc., the form is maintained
as distinct.
.\ single lieteronereis female is among the specimens from I.aguna Beach.
by

Moore,

differ

constantly

in

the

I

seen,

features

LEODICID.T,
LenJice mntiilifer

Yellow

in

color,

sp.

nov.

Body strongly narrowed caudad.

Prostiirnium sliort and broad.

The

palpal lobes large and rounded, bulging conspicuously forward
separated by a deep furrow. Tentacles in a slightly curved transverse

paired tentacle on each side lying

a

little

farther forward than the inner.

phores very short and not broader than bases of
of style which about equals the next two in

styles,

length.

moniliform, the articles short and well rounded.

any case certainly coinplete; the number of

and ventrad;
line,

The

exceeded by the

The

styles

in

first

the outer

Ccrato-

segment

general strongly

styles in types short but not in

from nine

articles present

peristomium much longer than the prostomium than which

it

is

to

twelve.

also clearlv

The

wider and


Journal of Entomology and Zoology

12

higher; entire second somite very short, not more than one-fourth as long as

much

short and conical,

cirri

sometimes distinctly annulated.
in

weak

X

Anal

The

left

and

plate four

the

branchiae

In maxillae II the right plate has six

part black.

in

last

odd or inner

plate seven or eight.

left

occur on

in the type

Moxillae strongly chitinized

slenderly conical.

short,

cirri

several of the suc-

in

then again falling to two, and, finally, the last

to three,

eight pairs or so are again simple filaments.

with edges

The number

each consisting of two filaments.

ceeding branchiae increases

XXXII.

encircling wrinkles but not distinctly

Branchiae begin as single filaments on IX or sometimes on VIII.

divided into articles.

Branchiae of

becoining more slender

Notocirri slenderly conical,

region as usual; with some

posterior

Nuchal

I.

shorter than the peristoniium, transversely ivrinkled or

;

brown,

large teeth, the outer
Ill

with nine teeth or

Number of segments in type one hundred and nine.
Length, 43 mm.; greatest width, exclusive of parapodia, 2.6 mm.
larger specimen has a width of 3.2 mm.
Type— M. C. Z. 2, 154.

Taken among holdfasts of kelp.
C. F. Baker, June 30, 1911.)
crenulalious.

An

incomplete

(

Arabella tagunae

sp.

nov.

As compared with A. atlerniala Treadwell, this is a smaller species differing in
^ippearance in being brown of a decided greenish tinge, excepting on the prostomium
The prostomium is less narrowed cephalad, being more
broadly rounded across anterior end. Median eyes not exceeding the lateral in size.

V

which the most
two
innermost closer together. Ill with fine teeth similarly arranged and formed. Maxillae
II nearly symmetrical
the left one with seven teeth of which the most anterior one is

Maxillae

represented by simple small hooks.

(upper)

ectal

long and slender, the two next

is

IV with

much

five teeth of

shorter and finer and the

;

much

right

the

largest,

with an additional small tooth

in

front of

(ectad of)

the

large one; neither of the plates extending caudad of the anterior end of the dental
series of

stout

and

I.

with seven or eight well developed teeth; the carriers very long and

I

throughout.

black

slender,

In

the

paraphodia the posterior lobe

is

well

developed,

and conical, distally somewhat blunt or rounded, extended ectad or caudo-ectad
is

always shorter than the

Setae

setae.

mostly six in the middle region of the body.

all

simple, limbate, in a single series of

Setae with the usvial double or sigmoidal

first bend or geniculation unusually strong, angular;
becoming fine antl hair-like. Body tapering caudad, pointed at the posterior end,

ending in two blunt lobes. Number of segments in the type one hundred and ninety-one.

curve over the limbate part, the
tip

Length, 46 mm.;

Type— M.
Taken

C. Z.

at the

2,

width,

exclusive

of

parapodia, 2

mm.

155.

shore "under rocks."
Aralirllii

mimflua

s]'.

nov.

Resembling the preceding species though smaller and more slender. Superficially
differing obviously in the form of the prostomium which is much more narroweil distad
and

is

tbscure.

Maxillae

strongly

in the

the

one,

left

depressed

neither

second pair

is

and bears about

nor furrowed either dorsally or ventrally.

resembling those of
in

the

which the right

other

species

in

plate, instead of

general,

Eyes smaller,
but

differing

being symmetrical with

decidedly long and exteiuls far proxiinad along the dental line of
fifteen teeth

as againsi

(inl\

six

on

tju'

left

I

one and eight on the cor-


Pomona
responding plate

in

ently with seven.
in

number and

on

I

with teeth

III

in

different in all being blunt

The number

teeth four instead of Hve.

and

Maxillae

lagujiiic.

Maxillae

13

Clarcmont, California

Collt-jje,

side with nine teeth, on left appar-

I'ight

arrangement

and

shorter.

as in laijunae but only four

I\'

as in the other species but

of segments in the type

near one hundred

is

sixty-five.

Length, 40

mm.;

Type— M.

C. Z.

width,

Taken among holdfasts

men

taken August

2,

mm.

1.1

156.

J,

(C. F. Baker, June 30, 1911.) Also a small speci-

of kelp.

1917, by Prof. Hilton.
Hihiir'ni gen.

nov.

Eyes
First two segments achaetous.
Maxillae absent, but the mandibles nonnally developed, the wall of the ali-

Setae
none.

all

mentarv canal opposite

developed.

well

simple, limbate,

thickened. Notocirri rudimentary.

the latter sirnpl\

liihorin rdiolii sp. nov.
liilinrin

The

luhola

nov.

sp.

type as preserved

brown

greyish

is

the specimen also states that

greenish

is

it

of a dull bluish green cast.
in

life.

:.nd

pointed caudad, more moderately cephalad.

and

somewhat longer than

The body

is

A

note with

strongly attenuated

Tlie prostomium larger than wide
two segments; subconically narrowed distad,
apically rounded, flattened dorsoventrally.
The two achaebous segments subetpial in
length or the second slightly longer, not produced forward below.
Mandibles short
and broad, not toothed, the edges meeting at an acute angle in front; the caudal
the

first

stems shorter behind point of separation than the blades
slender, blunt

in

front of this point, rather

Posterior lobes of parapodia subcylindrical, a

behind.

little

conically

narrowed distad but with apex well rounded, extending ectad or caudoectad in middle
region of body reaching to or a little beyond middle of longer setae, the setae relatively shorter in anterior region.
Setae all simple and limbate with the usual double
curve, the first curve or angulation obviously less marked than in ./. lagunac, which
form this species superficially resembles. Number of segments in type, two hundred
and seventy-seven.
Length, 92 mm.; width without parapodia, 2.2 inm.
;

Type— M. C. Z. 2, 157.
Taken among Phyllospadix, September

17,

1917.

GLVCERID.Ii
Glycera exigua

A

small

species

easily

and one posterior;
line.

base of parapodium.
distal

the

three lobes triangular, pointed

all

equalling the other two

The natocirrus

nov.

known forms of the California
Each of these present three lips, tw'o anterior

coast by the character of the parapodia.

fully

sp.

among

recognizable

is

in

reduced

The

length.
to

a

small

distad,

neurocirrus

is

with the posterior one
also

triangular

in

out-

rounded or nodular form slightly above

Branchiae simple cylindrical filaments, each attached toward
in G. alha and (/'. loiit/ipiriitis ; the first occurring

end of parapodium above as

on or near somite XX.V, short,
of terminal lips and

falling

in actual

much

twelve segments or so and those just

Prostomium

length not greater than parapodium exclusive

short of reaching ends of setae;

in

front of this

absent from last

caudal region

of usual general form; consisting of fourteen or fifteen

nuicli

rings.

reduced.

Proboscis


14

Journal of Entomolog\' and Zoology

long; weakly longitutlinally ridged and densely finely papillose.
Body strongly narrowed from the anterior region caudad, the caudal end slenderly pointed. Segments

Number

biannulate.

of segments in the type near one

Length, 26 mm.; width,

Type— M.

C. Z.

Glycera Inuiln aiuhia
in

having

form of

The branchiae

most do not surpass

at

ously

than

shorter

exigua

two

size at the

in

In the middle region they are cylindrical, distally rounded,

series.

at base of

para-

begin on the twenty-ninth setigerous somite and continue

about the one hundred and twenty-ninth, decreasing

and

a series of single, simple

having each branchia attached

in

the dorsocaudal surface just ectad of the notocirrus instead of at the distal

end above.
to

nov.

sp.

the branchiae in the

filaments but readily distinguished

podium on

thirty.

1917.

26,

Resembles exigua

hundred and

mm.

15S.

2,

Balboa, December

1.5

this

the distal

the

in

having four lobes

in

two ends of the
and transparent,

end of the parapodium, most of these being obviAlso decidedly different from

preserved specimen.

at the distal

end of each parapodium, two postsetal and

These are narrowly triangular, distally pointed, with the presetal lobes
and more conical and decidedly longer than the postsetal. The short, distally
rounded notocirri are attached at the base of tlie parapodia above in the angle between
the latter and the body wall.
Neurocirri distally subcylindric, resembling the distal
presetal.

thicker

parapodial

showing
with

The prostomium

lobes.

five

of apparently seven

indications

twelve.

and

disinctly

nearly fused

Proboscis long, densely papillose.

forty-five

Length

ringed

rings while the distal half in the type

to
is

near middle, the basal half

only vaguely annulate, though

making

rings,

the

total

number

Type incomplete caudally; one hundred

segments retained.

(not quite complete),

Type— M. C. Z,
A note gives the

mm.;

36

greatest

widtli,

1.3

mm.

159.

2,

color in

life

as light, the red blood

showing through

as usual in

the family.

Glycera Teniescens

A

very small foim differing from

The parapodia
are

two presetal

the

ventral one

wall.

The

sp.

nov.

two preceding

whoiK' lacking branchiae.

in

are strikingly different in that the postsetal lobe

as in anterior region, or

usual place

tlie

lobes

in the

which are long and subcylindrical

ordinaril\'

is

is

either wholly absent,

represented by a single, small, pointed process, while there

is

the

larger.

The

or finger-like

notocirrus

is

stnall

anil

and of which
occupies the

angle between the dorsal surface of the parapodium and the body-

Neurcrcirrus slenderly conical, darkened tlistad as are also the presetal

slenderly conical prostomnim showing twelve annuli.

tlistinctly

Type incomplete

greenish tinge.

length being 13 mm., width,

Type—

M

('.

Z.

2,

1.1

Type

at present

lobes.

showing

a

caudall>, sixty-nine segments retainetl, the

mm.

160.

ARICIin.T
Nainereis hesfiera

This

is

apparenllv

fewer segments.

It

a

differs

smaller species than

from those species

body composed of nnls nineteen segments and

sp.

nov.

hiiiijii

in
in

or

having

rahusla and
the

having the

is

composed of

anterior division of the
first

branchia: appear on


College, Chireniont, California

PcjiiKjiia

Tlie prostdmiiim

Uie thirteenth or fourteenth segment.

liroailly

is

rowing forward and with the anterior margin varying from
indented as

is

15
subtrapeziform, nar-

slightly

the case in the type; dorsal surface nearly Hat, simply

convex

mesally

to

marked with two

furrows, or sometimes with the median caudal region between furrows elevated. Peristomium with anterior margin above more or less concave, its median length about
equal to that of the second segment, which is also ordinarily bowed caudad.
In the

neuropodia of the anterior region the postsetal processes are broad, distally rounded,

which arc prominent;

thick lips

in the posterior region these

The

elongate, distallv pointed processes.

anterior region are thick, short cones which increase

The

posterior region being very elongate.

teenth segment as short processes but

pointed

much

processes

exceeding these

in

ranged

to the

in

the

in

postsetal

processes

of

).

The

the

in

the

and

stout setae of the posterior

distally

and
somewhat

notopodia

much of the mid-dorsal region

The neuropodial setae of the anterior

three subvertical series and form a patch twice as high

long (cephalocaudally

commonly

thick

the

leaving

contact,

end of the body.

in

branchi;e begin on the thirteenth or four-

become abruptly longer, basally

than

conical,

length in going caudad,

in

length; they are widely separated and, while curving in

mesad, do not come
continue

thicker

become narrowly

processes of the notopodia

postsetal

They

naked.

region are ar-

(dorsoventrally) as

row are mostly four

in

num-

These coarse setae are not at all clavate as in elongata

and are not roughened or cross-ridged above the cur\'e as in robusta the terminal
region above the curve longer than in the later species.
The setE of the other series
are more curved than in robusta and are abruptly contracted farther from the bodj;.
ber, less

three or five.

;

the contraction stronger but the

At

lines.

one edge similarly roughened or denticlated with cross

the ventral end of the series a small patch of ordinary, camerated, capillary

resembling the notopodials.

seta:

posterior end.

ments

in the

The body

Dorsal surface Hat

type one hundred and thirty-six.

spot at base of each branchia

broad anteriotly and narrows

is

convex as usual.

ajid the ventral

Color

Number

to

the

of seg-

general pale brown; at black

in

at least those of posterior region,

in

front and behind

the proximal part of branchia often darkened.

:'.nd

Length, 27 mm.; greatest width,

Type— M.

C. Z.

2,

2A mm.

161.

Siohiplns tunitui'/ys

sp.

ntw.

Resembling .V. iiim'iyer (C). F. Miiller) in general structure. .A less deepK pigmented species easily distinguished from this northern form in wholU lackiiig the
\entral papills (neurocirri) present in the latter below tlie parapodia of about the

eighteenth to thirtieth segments.
The prisiomium is similarly elongate and pointed
but is more slender; it is borne at the end of the peristomium which has the forin of

The

a truncate cone.
tions

branchia? begin anteriorly

and increase quickly

to

in

the

same way

long ligulate forms; but the

first

as very slight eleva-

one appears on the

sixteenth or seveiiteenth setigerous segment instead of on the twelfth or thirteenth as

usual

in

armiger.

The

for the latter species.

fully

developed branchis are obviously narrower than typical

The lobes of the parapodia are

do not become obvious so far forward.
lobe

is

similarly elongate and

bifiil

at

In the

first

bifid

general similar though they

more dorsal
more divergent, thinner and more

the lip with the inner or

longer; but the lobes are characteristically

The

in

second division of the body the ventral
lobe the

slender.

neuropodial lobes appear on the twenty-first setigerous segment.

The


16

Journal of

form

iloi>al lobe similar in

Type— M.

C. Z.

of all the types missing.

mm.

Greatest width, 2

Balboa

Caudal end

that in ariniger.

tii

and Zoology

EiitoiiKilofiy

162.

2,

(Sept. 10,

1917).

FLABELLIGERID.'K
FlaheUi/jcra liaercus sp. nov.

This species resembles

F.

Moore

lommrnsalis

the

in

neuropodia though these are apparently not so close as

in

approxitnaticni

that species

place actually contiguous though nearly so in the extreme caudal region.
this

they remain a uniform distance apart, which

forward

less

is

of

and are

the

no

at

In front of

than the length of

a

somite,

about the tenth somite from where the rows diverge gradually forward.

to

The notopodia more widely separated, the rows diverging cephalad froin near the
tenth somite, always much closer to each other than to the neuropodia.
Ventral surface flattened or weakly concave, the dorsal surface also flattened but slightly convex,

while the sides are convex

the body in part

;

cross-section subquadrate to subcircular;

in

slightly

is

widest

in

compressed from side to side,
middle region and narrowing

ways, more strongly so caudad, subfusiform.

Collar lobe deeply and widely
and ventrally; the lobe on each side bearing a series of numerous long
cross-striated setas which are reddish brown in color and are stouter than the ordinary

both

incised dorsally

The

notopodials.

There

notopodials are simple, finely tapered, colorless setae.

single seta in each neuropodium, this being in the form of a very stout hook
i?

dark throughout; the transverse terminal portion of the hook

slender and acute than in commensalis and the pseudo-joint

curved region; the shaft
ing

The

mesad.

cloaked bv
papillae

a

is

entire

dense growth of

is

densely

papillose.

long filiform

setas in

length.

papillce

The

notopodia, these papillae having similar clavate
face of dorsum, venter and sides are

Number

brown.

of

segments

Length, 13

mm.

Type— M.

C. Z.

Taken

2,

is

a

the color

longer and more

is

farther proximad of the

bent caudad at the level of the Joint, the hook proper ctirv-

surface

approximating the

is

;

much

The

setae

of

the

with large clavate

papillae also cluster densely
tips.

shrfrter.

The

collar
tips,

are

these

about the

papilla: of the general sur-

Color nearly uniform greyish

in type, forty-nine.

163.

in holdfasts of kelp,

August

1-,

1917.

CAPITELUIO.E
\' titnmasttis

In comparison with N. tenuis
in

the

form of the thorax, which

venter being

flat

fini/ttltitus

sp.

nin-.

Moore, known from San Diego,
is

this

species differs

strongly angulate instead of terete the sides and

and the dorsum usually but little convex, so that the cross-section is
in having the segments and their subdivisions sharply separated

nearly quadrate; also

with the posterior subsegment
of equal to

wide, but

in

it.

in

each case much shorter than the anterior instead

more as long as
Thorax narrowed caudad.

In the type the posterior thoracic soiTiites are twice or

some paratypes

The abThe prostomium

its

the relative length

is

much

less.

anterior part obviously thicker than the thorax

characteristic,

showing two

with coiwex, antcrliirly converging sides and

distinct
a

regions,

a

in

its

widest part.

broad posterior one

narrower, subconioal, palpoldal

ler-


Pomona

College, Claremont, California

17

from tlie liasal. Segments of abdomen irregularly multianand surface usually appearing strongly rugose and uneven.
Length near 160 mm.; greatest width of ahdomcii, 1.4 mm.

ininal part sharply set off

nulate, sulci deep

Type— M.
Taken

C. Z.

164.

2,

sand and

in

growths of

in

The

eel grass.

color

is

noted as reddisli

in

life,

as usual in the family.

SPION'OIDEA
Morants gen. nov.

Body with an
posterior

from a larger
Prostomium «ith a lateral

anterior region of fifteen setigerous somites separated

hy a specialized somite, the sixteenth.

region

Eyes none

process or horn on each side in front, notched in front at middle.

Dorsal

type.

cirri present in addition to branchia?

N'otopodia with simple capillary
seta;,

setae

hut others also with crochets.

Genotype

—M.

duplex

sp.

in

geno-

four setigerous somites.

first

Anterior neuropodia with capillary

throughout.

Anal,

on the

two.

ciiri

nov.
M'lrdrils Jitpli'x sp. nov.

Palpal processes

from

lost

type.

Proboscis as protruded short, distally expanded

Parapodia dorsolateral

over proximal region.

in position, the

anterior ones very thick.

Principal postsetal lobe rising above into a branchial process which
but in posterior region

inferior

uncate.

four

In the

Anal

in a series.
in

and subulate.

first

notopodial fascia a

much

Crochets with strongly narrowed neck;

end above the beak which
one

longer, slender

short anteriorly

is

Mesad

of the branchial

setae

strongly curved.
is

much

parapodium of the first four pairs is a cirrus or cirriform process.
of the most anterior parapodia much shorter than the dorsals,

process of each

The

is

is

decurved;

in

cirri slender, filiform,

the type has a short spur near

its

stouter, aciculiform, setae

with two curved teeth

posterior region

much

base.

few

in

at

which
distal

number, commonlv

longer than the preceding branchiae;

Total number of segments about one

luuidred and sixteen.

length, 21.5

Type— M.

mm.

C. Z.

2,

165.

Balboa.

The

tubes adhere closely to the body.

Their walls of

fine

sand.

AMPHARETID.«
Scliislocoiniis gen. nov.

Like Phyllocomus in lacking tentacles aiid pnstbranchial spines,

and four pairs of
genus in having the branchia; of two types, one pair
simple, subulate form and the other three with the
bearing two close series of lamellar branches, and
pairs of fascia? of capillary

series of

setae

braiichis.

It

in

bearing

differs

fifteen

from that

being of the ordinarv, smooth,
edges divided, two pinnatelv,

one with

an

csseruialK

single

branches in the genotype.

Genotype

—

A',

hiltoni sp. nov.

Schistocomus hiltoni

The body

segment from where
convex, venter

sp. nov.

has the ordinary general form, being widest near the

less

it

so,

narrows continuously
the

latter

to

fifth

setigerous

the slender, pointed cauda.

with a double median

lo[igitudinal

furrow

Porsum
in

the


18

Journal

Entoniolog)- and Zoologv

(if

Prostomium projecting forwarii as a simple hood with rounded
median region of anterior edge nearly straight; dorsal surface in type longitudinally wrinkled.
Ventrally the peristomium projects forward
between the sides of the prostomium in a conspicuous lobe or lower lip which narrows
somewhat distad and has the distal margin convex; surface longitudinally wrinkled.
posterior

region.

anterior corners and the

The

Second somite achaetons.
the

first

Of

uncini.

third bearing the first fascife of siinple sets, the sixth

pinnate branchia

the

one

on

occur

pair

third

the

setigerous

somite and one on the second while the branchiae with single series of branches in which
are on

the branches are less lamellate,

branchia?

on the

arising

second

the

setigerous

first

somite.

(first

presetal)

The

first

somite, the simple

branchiae

attached

are

The

near the middle of the dorsum, the others laterad close above the parapodia.

and especially the second

first

anterior edge of the prostomium.

segments near

beyond the

branchia extending forward

Color light fulvous or

in

Number

part greyish.

of

fifty-five.

Length, 22

mm.;

greatest width,

Type—M.

C. Z.

2,

inm.

3

166.

Taken at Laguna Beach
The tube in which the
b\'

simple

or

Sept. 15, 1917.

was found

type

is

35

mm.

long.

The

wall

thickened

is

the adhesion of fine particles of sand, fragments of shell, etc.

TEREBELLID.E
The prostomium
along

its

extends as a convex hood or inverted scoop above the mouth;

posterior border

behind the tentacles

sp. nov.

vidois

I.racn/2

a series of long,

is

crowded, tentacles.

above and widening on each

Mouth

side.

a crescentic slit

lip

the anterior

process on

III

or aiu' other segment,

characteristic of the species
(.ne

being present

from those of

beyond
near

its

its

midtile,

\o\\

series of denticles;

the

in

uncini

ty|ie,

is

all

is

The

and possibly more.

tlie

exceptionally

sinus

hod\ of uncinus rather narrow,

tl>e

at base

long beak

which,

narrow, the process arising

not comparatively high, crossed

obtuse; vertex

A

differs

seta?

and more geniculate appearance

straight;

No

truncate.

being wholly smooth.

of setigerous segments, at least thirty-

are characterized by an

curved base

stronglv

number

their longer fine tips

in

The

of this region.

the large

is

(I\'-XXXI1I)

iiiuia

prostomial fold

with corners curved caudad;

median edge of which

bordered behind by a thick
dorsal cirriform

The

crossed by a transverse band of distinct eyes, the band narrow

is

by mostl\' four

shoulder on convex side

much

and well below le\"el of bottom of sinus.
The tvpe is incomplete, only near thirty-eight segments being present. The color is
noted as pinkish in life. At present it is fulvous in the type.
farther toward the enil tliau,

e.g..

nitJa

in

Length of incomplete specimen not

Type— M.

C. Z.

2,

167.

to

be close

Pistil

This form seems

than that of alala, differs

in

to

in

excess of 12

mm.;

greatest width,

.S

nnii.

jratrella sp. nov.

1*.

uhtta Moore.

The

t\

pe,

whicli

is

much

various details from the description of the

principal lateral wings are confined to the third seginent and

are

smallei'

latter.

united

The

across the

third somite instead of involving the anterior border of I\' and crossing the
above; connecting dorsal fold low and lacking anv forwardly directed process;
the wing rises as a high, rouruled loln' on each sidi' just liclnw level of setigerous

dorsum of

latter


Pomona

above the inidilorsal surface.

tubercles, rising high

on HI there
not

III, this

on IV on each

is

not

prominent wings

In aciilitiiin to the

much h)wcr

wing paralleling that on
Unlike those of alala. somites II and III are not
throughout. Prostomium short. Tetitacles mostly

a

distinct

rather slender,

type;

in

lost

siiie

more prominent above.

confounded laterally but are

19

Collefjc, Clarfinont, Calitornia

ridge or

apparently

long,

in

but

transverse series.

single

a

Peristominm deeply excavated at middle below, the bottom of the excavation rounded

and the peristominm produced on each side of

and other

branchia", as in the genotype

right anterior branchia

much

Of

smaller.

larger than the

is

much

the

pair,

right,

unlike that of alala,

is

The manubriate

uncini of
is

much

have the general form of those

\'

larger

atui

more rounded with

alala, but the bulge

in

subrostral

the

obtuse and nearer the middle of the obliipie edge; beak less divergent from
vertex with three transverse series of denticles.
fulvous,

border of each segment laterally and
eighty

retaining

color in

abdominal region

the

Type

ventrally.

not

com|ilete caudally,

ipiite

somites.

Length, 36

mm.;

greatest svidth, 2.8

Type— M.

C. Z.

2,

The wall

The

tooth more
manubrium;

darker with a narrow brownish stripe along caudal

thoracic

the

in

much

also

In the type the sternal plates are not sharply differentiated.

left one.

below the beak

light

The
The

usual large lobes.

the

into

the largest, the trunk very long, with the left anterior

posterior

the

this

species, strongly asymetrically developed.

mm.

168.

of the tube

is

composeii of saiul anti shell fragments.

hancva

gen. nov.

Prostomium short; with numerous tentacidar filaments. Uncini avicular and of
same form throughout. Seta; beginning on third somite; tips simple. Uncini beginning on

fourth

the

No

somite.

foliaceous

lateral

Branchias two pairs; branched; attached on somites

Gfuoly/^e

—

hespera

A',

Differs from

and

of simple

sp.

and

III.

no\'.

Thelepus and

.'\tlielepus

having the uncini begin on

in

on the anterior segments.

lobes
II

in

having

the

branched instead

liranchia»

I\'.

i\aiifi'a lirsl>fr(t sp. nov.

The prostomium forms
upward

turned

terior fold

a

prominent upper

lip

of

which

along, leax'ing a deep concavity between

all

along which the tentacles are attached.

it

were detected

in

Peristomium forming

the type.

anterior

border

is

upcurving pos-

tlie

Because of their curled and tangled

number of tentacles was not ascertained, hut
long, some when fully extended being 15 mm.

condition the precise

each side; they are

the

and

a

lower

lip

about twelve on

is

in

length.

of but

No

eyes

moderate length

with straight anterior edge; scarcely twice as long as the second somite below. First
branchia on each side attached to second somite just in front and mesad of the first

The

second branchia

attached just caudad of the first on the
Both branchise very similar, each presenting three principal branches of which the most mesal is largest; ultimate branches numerous, rather

setigerous tubercle.

caudal region of somite
Capillary

short.

seta;

setigerous

processes

edge; but

in

first

III.

beginning on

are in

the

and continuing

III

form of

vertical

going caudad these become reduced

to

plates with
finally

to

XXVII.
straight

The

ajiterior

truncate,

slight tubercles,

distal

with the

about ecpial

while

in

furrow.

the

to half the intervening space and by the seveinh ei|ual to this space,
abdominal region the opposite series are separated merely by the median

Anterior

ventral

plates

strongly

longitudinally

fvirrowcd.

Capillary

sets


Journnl of Entomology and Zoology

20

narrowly bilinibate, drawn out into a very tine ^imple tip. I'ncini, at least for tlie most
part, in two series both in thoracic and in abdominal region; apparently with mostly
three transverse rows of denticles at vertex; beak long, the sinus with parallel sides,

opposite side of body evenly curved, not distinctly shouldered.

ments

in

XXVII

the type,

which

are setigerous.

Total number of seg-

complete, about one hundred and thirty, of which

is

Body rapidly narrowed

to

the eighteenth

II

to

segment, but only

very gradual!}' thereafter.
Length, near 45

Type— M.

C. Z.

mm.;
2,

greatest width, 1.8 min.

169.

Balboa.

SABELLID.l-:

monads

Myx'icnla

sp. nov.

and general appearance reseinbling M. pacifica Johnson, with the type
From that form the present one may readily be disof which it has been compared.
tinguished in having the ventral median process from the first segment drawn out into
a slender entire tip instead of being broad and presenting distally two angles or
lobes; the process is furrowed longitudinally and the edges are somewhat turned
In

size

Readily distinguished by the form of the abdom.inal
These have the general form of those of pacifica but as a whole are longer
with the body proportionately more slender and its abvertigial end more rounded; the
beak is longer and less divergent, distally curving a little back toward the body; the
The body in the type is somewhat fusiform, being narsides of the sinus parallel.
rowed both ways from the middle but more strongly so caudad. In a paratype the
body is scarcelv narrowed cephalad. Body somewhat depressed dorsovcntrally, less
Total number of segments near seventy.
terete than in pacifica.

down.

Branchiae twenty-two pairs.

uncini.

Length of

tvpe,

Type— M.

C. Z.

Taken from

exclusive of branchi^, 40

mm.;

mm.

greatest width, 6.^

170.

2,

holdfasts of seaweeds.
I'ntamilla clara sp. nov.

The bodv

in

general light hrowii; but ventrally there

The

fulvous stripe over the ventral plates.

is

a

median longitudinal

branchiae are crossed by a series of dark

bands or annul! which fade out proximally, about three distad of the middle of length

There are nineteen pairs of branchial radioles; barbs nu-

being deep and distinct.

merous, densely arranged

to

near

tip,

the

naked

distal region of axis very short, pale

excepting where partially or completely involved by ilie transverse dark bands. Ventral lobes of collar moderate, rounded, edges a little rolled down; dorsal ends separnot produced forward below, lobes
no lateral incisions, being but two-lobed
\'entral plates all rectangular,
rounded and separated. Thoracic segments eight.
Total number of segments,
those of the abdomen divided by the midventral svdcus.

ated;

;

sixty.

Length without brarichii
3

21

mm.;

length with liranchia-, JS

mm.;

greatest width,

mm.

Type— M. C. Z.
Taken on beach

2,

171.

at

low

tide.

I'otamilla oniissa sp. nov.

The
lighter

general

and

color

is

the hranchia-

dusky or pale brownish with
rather \veakl\

transvcrscl\

the

anterior

ventral

banded with dark.

plates

Radioles of

21

PoiiKJiia C(jll('gf, Clateiiiiiiit, California

branchiae

in

simple series; seventeen

a

ward below

Collar well tiex'eloped, produced for-

jiairs.

two pointed lobes overlappinj; at the middle. Eight setiKerous thoracic somites.
Most dorsal thoracic sets in each fascicle long and finely pointed with
wings narrow; the ventral sets much more nuinerous, shorter, spatiilate, with fine tip.
The uncini ha\'e the posterior process very short, rounded at the eiul, much shorter
vertex high and
iind more slender than the neck, which is rather strongly curved
in

;

Type

narrowly rounded; beak not strongly depressed.

incomplete, only seven of the

libdominal seginents being present.

Length of

first

segments,

sixteen

Type— M.

C. Z.

2,

mm.; width,

2\

172.
ciilurnla sp. nov.

I'l/lamillii

The
a

mm.; including branchis,

15

mm.

2.5

type

notably marked with black pigment;

is

dark

longitudinal

close series of

one

stripes,

in

membrane

the collar

crossed with

with each radicle and nar-

line

rowing caudad the branchiae crossed transversely with dark bands. Thoracic somites,
more notably the anterior ones, with a duskv to black band in front of each uncinigerous torus and a dark spot on the dorsuin mesad of the setigerous papilla.
The
collar with a dark area ventrad and also dorsad of the fascicle.
Ground color
greyish of light brown cast, lacking the yellow dominating in omissa.
Sixteen (or
;

seventeen)

pairs of radioles in the branchiae.

overlapping

the

in

r,

usually

in

two

Length, 25

mm.; with

Type— M.

C. Z. 2,173.
paur:/fis

nov.

sp.

rather slender species with branchiae of moderate length.

Radioles

where present usually but

radioles;

the eyes deep

fifteen

in

a single one on each radiole,

purple, variable in side from moderate to small;

incision,

short,

the ectal

A

are

much fewer

asymmetrical,

tip

spatulate
short.

Tube

C. Z.

2,

edge passing out

in

setae

two

varving

line.

The

dorsal

in

an even concave curve

of the usual

is

to

the

the presence of ten

two types of which the upper

31

nun.;

series

with branchia;, 36

mm.

174.

tough, corneus.
I'si'ihlo/>uliimillii

The

at

with distal expansion broad and wings
Total number of segments, seventy-eight.
setJe

Length without branchiae,

Type— M.

situated

is

characteristic feature of the species

Dorsal

setigerous thoracic somites.

all

one case two;

mesad of the line of setigerous tubercles, wide
obtuse; lobe mesad of notch small, anieriorlv rounded,
the dorsal furrow; median ventral lobes separated by a

the mesal edge extending into

anterior lateral margin.

in

Free dorsal edge of branchial

short obtuse lobes overlapping in the middle

the collar lobe on each side

open, rectangular or slightly

narrow

Excepting the eyes

Eyes few, not present on

pairs.

distance between base and middle of length of radioles.

membrane with two

fifty-one,

mm.

branchiae, 30

with no pigmented markings.

in

numerous,

setae

lost.

Pseudopotamilla

notch

Inferior

Total number of segments present about

series.

few of the most caudal being

A

Ventral lobes of collar pointed, widely

ends free, projecting toward each other

dorsal

line,

Setigerous thoracic somites eight in number.

dorsal groove.
spatulate,

median

type of this species

is

a small

uniform dusky color throughout.

Itiirvd sp.

nov.

indiviilual which,

as preserved, appears of a

Branchial radioles fourteen or

fifteen

pairs;

in

a