Journal of the proceedings of the Linnean Society, Zoology 09

JOURNAL

THE PROCEEDINGS

THE LINNEAN SOCIETY.

ZOOLOGY.

VOL.

VI.

..V

LONDON:
SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON HOUSE;

ANU BY

LONGMAN, GREEN, LONGMANS AND ROBERTS,
AND

WILLIAMS AND NORGATE.
18G2.


FRANCTR,
PRINTED BV TAYLOR AND
RRP

l,ION

COURT. FLEET STREET.


LIST OF PAPERS.

Page

Bates,

II.

"W

.,

Esq.

Contributions to an Insect Faima of the Ajnazon ^'alley.
doptera

:

73

Busk, George, F.R.S., Sec. L.S.
Observations on some Skulls from Ceylon,
Veddahs

CoBBOLD,

T.

Lepi-

Heliconince

said to be those of

166

Spencek, M.D., F.L.S.

Histological Observations on the

Eye

of the Cod-tish (3Iorrhua

ndgaris), with especial reference to the Clioroid Gland and

the Cones of the Retina

145

Couch, Jonathan, F.L.S.
Note on the Occurrence of the Crustacean
England

Sci/Ilarus

Arctm

in

78

Laughrin, William, A. L.S.
Observations on the Choice of Food in the

Cod and Ling

165

LiNCECUM, Gideon, M.D.
Notice on the Habits of the " Agricidtural

Ant

" of

Macdonald, John Denis, R.N., F.R.S.
On a New Genus of Tunicata occurring on one

Texas ....

29

of the Bellona

Reefs

78

Newton, Alfred, M.A., F.L.S.
On the Possibility of taking a

Zoological Census

23

Reeve, Lo\'ell, F.L.S.

On

the Structure of the Mantle in TestaceUa

Salter.

On

S.

James

A., M.B., F.L.S., F.G.S.

the Cranial Charactt-r.^ of the Snake-Rat,

Fauna

1.53

new

to the British

66


IV
Page

bMiTH, Peedebick, Esq.

New Species of Ants from the Holy Laud,
with a Synonymic List of others previously described
Catalogue of Plymenopterous Insects collected by Mr. A. R.
Wallace in the Islands of Ceram, Celebes, Ternate, and
Descriptions of some

3G

Gilolo

Stainton, H.

31

T.,

F.L.S.

On the Abnormal Habits

of

some Females

of the

Genus Orgyia

.

156

ViNEN, E. Hart, M.D., F.L.S.
Description of a curious

Walker, Francis,

Form

of Dipteroxis Larva

1

F.L.S.

Catalogue of the Dipterous Insects collected at Gilolo. Ternate,

and Ceram by Mr. A. R. Wallace,

Avith Descriptions of

New
4

Species

Catalogue of the Heterocerous Lepidopterous Insects collected
at Sarawak, in Borneo,
tions of

New

West, Tuffen, F.L.S.
On certain Appendages
Holding or Climbing

Index

by Mr. A. R. Wallace, with Descrip82, 171

Species

to the

Feet of Insects subservient to

2G
199


JOURNAL OF THE PROCEEDINGS
OF THE

LINNEAN SOCIETY OF LONDON

Form

Description of a curious

YiNEK,

E.

Haet

M.D., E.L.S.

Esq.,

[Eead Feb.

In the

By

of Dipterous Larva.

21, 1861.]

early part of the year 1855, while examining with the

microscope some water taken from a pool near

my

house at Bays-

water, I noticed some small animals moving about with an active

wriggling motion, which, as I believe them to be peculiar, I ven-

They were very
few in number, and I mounted some specimens in Canada balsam
ture to introduce to the notice of the Society.

for future observation.

My first
mere

casual examination gave

larval conditions of

some

insect

me
;

the idea that they were

a belief which was strength-

ened by the most prominent feature of the animal

—a beautiful
—and under

tuft of hairs (possibly respiratory organs) at the tail

were put aside with some other objects, but
more pressing occupation were for a long time

this impression they

in consequence of

neglected.

I have since consulted several entomologists, and finding their
opinions to coincide with my own, I have thought it might be useful
to give the following description

Body composed
tively short

;

:

of thirteen segments, the four anterior compara-

cephalic joint narrow, truncated in front

LINN. PEOC.

— ZOOLOGY.

;

1

eye-spots


2

DE.

VINEN ON

E. H.

A.

CURIOUS FOBM

double, placed near the lateral margins and below the anterior

Caudal segment furnished with twelve
the former being retroverted and disposed in pairs, alternating with the latter, whicb are

third of the segment.

spines or

setae,

eight long and four short

;

somewhat nearer the extremity.
In addition to these characters, I may remark that the head
appears to be supplied with a complicated buccal apparatus, but
the preservative medium has rendered the parts so transparent
that I refrain from hazarding a precise description of

its

several

Moreover, in different examples these appearances are dissimilar, whilst the cephalic segment itself is proportionally longer

parts.

some
more or

in

cases than in others.
less elongated,

The eye-spots are always

distinct,

each evidently consisting of two separate

pigment-masses, the line of demarcation being clearly defined.

In the specimen figured a on the

slide,

elongated and more uniform in outline

behind than in front.
ratus there are

two

;

the eyes are

much more

being, nevertheless, thicker

Connected with the eyes and buccal appamuscular masses, which

laterally disposed

fill up the longitudinal halves of the cephalic segment.
The buccal cavity itself is tolerably well defined, being funnelshaped and apparently closed behind. The oesophagus takes its
origin at the upper and back part of the sac, immediately behind

almost

a peculiar form of dental apparatus which guards the pharyngeal

This structure forcibly reminds one of the gastric teeth
found in decapodous Crustaceans, and appears to consist of a
central and two lateral horny pieces, which, acting upon one
opening.

another, serve to comminute the food only partially broken up
by the buccal organs. The intestinal canal can be traced throughout the entire series of segments, and on either side of it runs a

conspicuous vessel filled with highly coloured blood. I have not
observed any trace of reproductive organs, a circumstance which

alone renders it highly probable that we have to do with a larval

The last or thirteenth segment is considerably narrower
than those of the body proper. The eight long spines are jointed
at the base, where they are comparatively thick, becoming gradually attenuated towards the tip the segment itself is also slightly
insect.

;

The length of each spine
than that of the caudal segment, and fully four
times longer than those of the smaller series placed nearer to the

increased in breadth at the lower end.
is

somewhat

less

end of the segment these latter project at a right angle from the
tip, and do not appear capable of retroversion.
;


OF DIPTEE0U8 LAEVA.

3

In the above description I have pxirposely refrained from enterowing to the imperfection

ing into very minute particulars,

my preserved

observable in

specimens.

I have ventured, however,

few particulars, hoping at some future time to
analyse more accurately fresh and Kving examples, should I have
the good fortune to meet with them.
I cannot conclude these remarks without expressing my thanks
to relate these

my friend Dr. T. Spencer Cobbold for his excellent drawings,
from which the accompanying figures have been copied.

to

^32. yS'

DESCRIPTION OF CUT AS REDUCED.
Fig.

1.

Fig. 2.

Three

larvae (a, h, c), of the natural size.

The specimen marked

Fig. 3. Cephalic
h,

oesophagus

pharynx
tour,

X

;

;

c,

c,

X8

diameters.

segment of the specimen (marked

pharyngeal teeth

/, muscles to the eyes

;

;

d,

g,

eyes

;

e,

a)

:

a,

buccal cavity

muscles of the mouth and

integument showing a double con-

about 70 diameters.

Feb. 2l9t, 1861.

1*


MR.

4

WALKEE ON DIPTEBA COLLECTED AT

r.

Catalogue of the Dipterous Insects collected at Gilolo, Ternate,
and Ceram, by Mr. E. Wallace, with Descriptions of New
By Francis Walker, Esq., F.L.S.
Species.
[Read Feb.

21, 1861.]

GrlLOLO.

Fam.

TIPULID^,

Haliday.

Gen. LiMNOBiA, Meigen.
species belongs to Meigen's Div.

The following
vol.

i.

p. 122, pi. 4.

fasciis

Bijptera,

Fotm. Lsetc ochracea, antennis, abdominis

LiMNOBiA EUCHROMA.

1.

D.

15.

f.

quatuor pedibusque nigris,

alls

nigricantibus, halteribus apice

nigris.

Female.

Bright ochraceous

minutely setose, a

little

black bands, 2nd band

;

antenna; black, setaceous, submoniliform,

longer than the head

much

the latter angular in front, 4th
legs black, slender

;

Pam.

abdomen with four

band much broader than the 2nd
veins and knobs of the halteres
;

wings blackish

Length of the body 6

black.

;

broader than the 1st and than the 3rd,

lines; of the wings 12 lines.

STEATIOMID^,

Saliday.

Gen. Ptilocera, Wied.
2.

Ptilocera 4-dentata, Fahr.

3.

Stratiomys cinctilInea,

See Vol.

I.

p. 7-

Gen, Stratiomts, Qeoffr.
n. s.

Fcem. Nigra, capite anthracino

nitente, peristomatis lateribus, antennis basi, scutelli dentibus

duobus

margine flavescentibus, pedibus halteribusque

abdominisque

flavis,

alis subcinereis.

Black

Female.
side

;

;

head coal-black, shining

antennae yellowish at the base,

of the head

;

;

peristoma yellowish on each

much

shorter than the breadth

thorax with slightly gilded pubescence

;

scutellum with

two pale yellowish teeth ; abdomen with a narrower yellowish border
legs and halteres yellow ; wings slightly cinereous ; veins black.
Length of the body 4 lines of the wings 7 lines.
;

Gen. Clitellaria, Meigen.
4. Clitellaria bivittata, Fabr.

See Vol.

L

p. 7.

Gen. Sarqus, Fabr.
6.

Sargus

tarsalis.

Walk.

See Vol. V.

p.

274.

6.

Sargus

tibialis,

Walk.

See Vol. V.

p.

273.


GILOLO, TEBNATE, AND CERAM.

5

Gen. Massictta, Walk.
Massicyta cerioides, Walk.

7.

See Vol.

III. p. 79-

Gen. SoLVA, Walk.

SoLVA HYBOTOiDES,

8.

n.

luteis

(mas) aut

flavis

Mus

s.

lide flavis, thoracis lineis

et

Fcem. Nigra, antennis basi pal-

abdomine pedibusque

lateralibus scutello

(foem.),

abdominis disco foem. nigro,

tibiis

posticis nigris, alis cinereis.

Male and Female.

mouth and

Black;

palpi pale yellow;

antennae

lanceolate, shorter than the breadth of the head, pale yellow at the

thorax with a humeral callus and an elevated line along each

base

;

side

and the scutellum luteous in the male, pale yellow

'pubescence slightly gilded

abdomen luteous,

;

in the female

with the exception of the hind borders of the segments

in the male, pale yellow

hind

tibiae

cinereous
lines

;

black, curved

veins black

;

of the wings 6-8

;

in the female;

middle

;

tibiae

;

disk black in the female,
legs luteous

;

hind femora incrassated;
;
wings
Length of the body 3-4

black in the middle

halteres pale.

lines.

Fam. ASILID^, Leach.
Subfam. Dastpogonites, Walk.

Gen. Dastpogon, Fabr.

Dasypogon SOLUTUS, n.

9.

nigris,

vittis

abdomine rufo clavato
pedibus

nigra,

Mas. Niger, capite thoraceque

s.

antennis linearibus, thorace

halteribusque

quatuor pectoreque

apicem
rufis,

fasciis

versus piceo

alis

fascia

apice

cinereis

auratis,

duabus
basali

nigricanti-

cinereis.

Male.

Black

few pale

;

head with pale gilded tomentum

bristles

;

as long as the breadth of the head; thorax

gilded

tomentum

short, broad,

abdomen

;

;

epistoma

Antennae

eyes with very small facets.

flat,

with a

linear, nearly

and pectus with pale

thorax with four black stripes, the lateral pair

obliquely intersected; pectus with two black bands;

red, clavate, with a black

band near the

base, the four last

segments with slightly piceous disks ; legs red, robust ; femora with a
few stout black bristles ; tarsi black towards the tips ; wings cinereous,
blackish cinereous towards the tips and along the adjoining part of

the

hind border;

veins black, tawny

Length of the body 7
10.

Dasypogon semifilatus,

auratis, tliorace vittis

abdomine clavato
reis,

at the base;

halteres red.

lines; of the wings 12 lines.

quatuor

n.

s.

latis

Fam.

fasciis tribus anticis fulvis,

halteribus flavescentibus.

Niger, capite thoraceque

pectoreque

fasciis

pedibus

duabus

nigris,

rufis, alis cine-


MR.

F.

Black

Female.

stoma

flat,

;

WALKER ON DIPTEEA COLLECTED AT
head with gilded tomentum, cinereous behind ; epi-

with two pale bristles

palpi short

;

;

antennae mutilated

thorax and pectus with gilded tomentum, the former with four broad
black stripes, the latter with two black bands ; abdomen clavate,
about twice the length of the thorax, very slender towards the base,

where

it

dilated

is

tawny bands, 3rd band in-

fore part with three

;

terrupted in the middle, dilated on each side;

black

tarsi

;

legs

red, slender;

posterior femora and tibiae with a broad black middle

band ; wings cinereous ; veins black ; halteres yellowish.
the body 6 lines ; of the wings 1 lines.

Length of

Subfam. Laphrites, Walk.

Gen. Laphria, Fair.
See Vol. V. p. 146.

11. Laphria tristis, Dol.
12.

Laphria comes. Walk.

13.

Laphria conveniens. Walk.

14.

Laphria setipes,

narum

n.

See Vol. III. p. 86.
See Vol. V. p. 278.

Mas. Cyanea,

s.

capita argenteo, anten-

articulo 3° lineari, thoracis lateribus anticis pectoreque albo to-

mentosis, abdomine purpureo longo, pedibus purpureis longissime
setosis,

femoribus posticis incrassatis,

nigricantibus dimidio basali

alis

cinereo, halteribus albis.
;
head silvery in front, thickly clothed beneath with white
mystax with a few black bristles ; third joint of the antennae
conical at the tip ; pectus and sides of the thorax in front with

Male. Blue
hairs

;

linear,

white tomentum

;

abdomen

length of the thorax
tarsi

;

purple, slender, linear, about twice the

legs purple, thickly clothed to the tips of the

with long black and white bristles

partly blue

;

;

femora much incrassated,

wings blackish, cinereous for nearly half the length from

the base; veins black

;

halteres white.

Length of the body 8

lines

;

of the wings 12 lines.
15.

Laphria flagellata,

n.

s.

Mas

et

Fcem.

Nigra, capite aurato,

antennarum articulo 3° lato fusiformi, pectore albo tomentoso, segmentorum abdominalium marginibus posticis lateralibus albis, pedibus
purpureo variis, alis nigris basi cinereis. Mas. Abdomine pm'pureo.

Male and Female.
with white hairs

Blue ; head brightly gilded in
;

mystax with several black

third joint broad, fusiform

;

front, clothed

bristles

pectus with white

;

beneath

antennae black,

tomentum

;

abdomen

with white tomentum on the hind borders of the segments; legs
partly purple, thinly beset with
black, cinereous towards the base

Abdomen
lines.

purple.

black and white bristles;

wings

veins and halteres black.

Male.

;

Length of the body 4^-5

lines

;

of the wings 8-9


GILOLO, TEENATE,

AND CEBAM.

7

Subfam. Asilites, Walk.

Gen. Trtjpanea, Macq.
16.

Trupanea gilolona,

n.

Mas

s.

et

Nigra, capite subtus

Foem.

albo piloso, fronte subaurata, mystace e setis nigris albisque, thorace

segmentorum abdominalium marginibus

cinereo vittis quatuor nigris,

posticis ventreque cinereis, tibiis rufis apice nigris, alis cinereis strigis

duabus subcostalibus sordide
Male.

Black

;

gilded

slightly

albidis, halteribus albidis.

head thickly clothed beneath with white hairs
epistoma prominent

;

black and of fewer white bristles

;

four black stripes of the usual form
tip,

;

thorax cinereous, with

;

pectus hoary

;

abdomen

legs stout with a few black bristles

;

towards the tips

wings dark cinereous

;

with dingy whitish stripes
the body 6 lines

Female.

of the wings

;

1 1

;

tibiae

;

;

sexualia very

dark red, black

subcostal and radial areolets

Length of

halteres whitish.

lines.

Third joint of the antennae fusiform, about one-fourth of the

abdomen

length of the arista ;

thorax

;

veins black

;

slightly

about twice the length of the thorax

hind borders of the segments and underside cinereous
small

front

third joint of the antennae fusiform,

about one-third of the length of the second
tapering from the base to the

;

mystax composed of many

;

lanceolate, full twice the length of the

apical part stylate, shining.

;

Length of the body 9

lines

;

of

the wings 12 lines.

Gen. AsiLus, Linn.
Walk.

17. Asilus involutus.

18.

Asilus condecorus,

See Vol. V. p. 281.
n.

s.

Foem.

Cyanescenti-niger, robustus,

fronte aurata, mystace e setis plurimis nigris paucisque albis, thoracis

segmentorum abdominalium marginibus
abdomine subplano uon acuto, pedibus robustis, alis

suturis, lateribus, pectore et

posticis canis,

cinereis apices versus nigricantibus.

Female.

Bluish black, stout, with black bristles

thickly clothed

;

mystax composed of numerous black

head gilded in
epistoma

beneath with white hairs ;

front,

prominent

and of a few white
more than
one-fourth of the length of the style ; pectus and sides, and sutures of
the thorax with hoaiy tomentum ; abdomen somewhat flat, slightly debristles

;

bristles

third joint of the antennae elongate-conical, not

creasing in breadth from the base to the tip, less than twice the length

of the thorax

;

hind borders of the segments hoaiy ;

shining, not acute

a few black bristles

;

wings cinereous, blackish towards the

along the adjoining part of the hind border
the cubital vein undulating
7 lines; of the

wings 14

;

;

halteres whitish.

veins black

Ommatius

noctifer.

Walk.

See Vol.

;

black,

and with
tips

and

forks of

Length of the body

lines.

Gen. Ommatius, linger.
19.

tip

legs stout, with slight white pubescence

j

III. p. 88.


MB.

WALKER ON DTPTERA COLLECTED AT

F.

20.

Ommatius

21.

Ommatius PLATYMELAS, n. s.

thoracis

retrahens. Walk.

See Vol.

III. p. 88.

Niger, latus, fronte aurata,

Fcem.

lateribus subauratis, scutello cinereo,

segmentorum marginibus

posticis

abdomine subplano,

maculisque

trigonis

lateralibus

cinereis, tibiis rufis apice nigris, alis nigris nigricante marginatis.

Female.

Black, broad, stout

gilded in front

;

;

flat

head clothed beneath with white hairs,
mystax extending to the base of the
;

composed of black

antennae,
bristles

epistoma

;

and of a few

bristles

thorax slightly gilded on each side

pectus hoary

;

inferior white

scutellum cinereous

hind borders of the segments and underside with cine-

;

reous tomentum, which forms triangular spots along each side

;

very robust, with black bristles

;

wings

black, blackish towards the tips

and along the hind border

Length of the body 6

pale yellow.

Fam.

lines

LEPTID^,

;

;

legs

halteres

of the wings 11 lines.

;

Westw.

Walk.

G-en. Stjbagina,
22.

red, with black tips

tibiae

SuRAGiNA siGNiPENNis, n.

lateribusque

canis,

Fosm. Nigra, thorace vittis duabus
s.
abdomine cano lanceolato apicem versus comrufescenti-piceis, ahs cinereis

presso, femoribus apice fulvis, tibiis

duabus maculaque interiore nigricantibus, gutta adhuc interiore

fasciis

nigra.

Black

Female.

;

head with whitish tomentum behind and beneath

thorax with two hoary stripes, which are dilated and united hindward
sides

and pectus

also hoary

towards the obtuse
long, slender

;

cinereous, with

tip,

;

abdomen hoary,

compressed

lanceolate,

nearly twice the length of the thorax

femora with tawny

tips

;

tibiae

reddish piceous

;

;

legs

wings

two blackish bands, which are united on the costa and

band apical; a blackish

are separated obliquely hindward, second

elongated subcostal spot near the inner side of the
black discal dot

nearer the base

still

Length of the body 6

base.

Fam.

lines

;

;

first

band, and a

halteres yellowish towards the

of the wings 12 lines.

BOMBTLID^,

Leach.

Subfam. Thebetites, TValk.

Gen. Thereva, Latr.
23.

Thereva conscita,

n.

s.

Mas.

Nigra,

argenteo tomentosa,

thoracis disco nigro vittis duabus interlineatis canis,

sex nigris,

Male.

alis cinereis apices

abdomine

fasciis

versus nigricante nebulosis.

Black, with silvery hoary

tomentum

;

head

silvery white in

3rd joint of the antennae lanceolate, nearly as long as the 1st
and 2ud together ; arista extremely short ; disk of the thorax black,

front

;


AND CEEAM.

OILOLO, TEKNATE,

abdomen

with two hoary interlined stripes;
linear,

9
white, nearly

silvery

with a short fringe along each side, and with six black bauds,

and 2ud bands broad, 3rd very broad, 4th and 5th very slender,
; femora
and tibiai with silvery white tomentum
wings cinereous, slightly and partly clouded with blackish towards
the tips ; veins black ; halteres white. Length of the body 6 lines
1st

6th broad, apical

of the wings 10 lines.

Subfam, Bombtlites, Walk.

Gen. Antheax, Fabr.
24. Anthrax Pelops, Walk.

Tarn.

See Vol.

II. p. 90.

MUSCIDJE,

Latr.

Gen. Masiceea, Macq.
25. Masicera morio, Dol.

See Vol. V.

p. 154.

Gen. EuETGASTEE, Macq.
26. Eurj'gaster ridibunda, fValk.

See Vol. IV.

p. 125.

Subfam. Dexides, Walk.

Gen. EuTiLiA, Desv.
27. Rutilia ixoides, Walk.

28.

See Vol. V. p. 289.

Rutilia FERVENSjVar.,

See Vol. V.

FFaZ^.

Mas. Splendi-

p. 288.

dissime cyaneo-viridis, capite plagis duabus anticis testaceis trigonis

abdomiue

frontalibus, thoracis disco cupreo vittis quatuor nigris,
fasciis tribus guttisque

duabus apicalibus

nigris,

vitta,

pedibus nigris,

alis

luridis.

Var. Male. Brilliant bluish green; head with a triangular testaceous

patch on each side of the peristoma ; frontaha deep black, widening

much

in

front

;

antennae black

;

arista

pubescent

;

thorax with a

which the middle pair
are much abbreviated hindward; abdomen with a black stripe and
with three black bands, 1st band basal, 2nd and 3rd convex on each

cupreous disk and with four black

stripes, of

side in front, a black

on each

lurid

;

apical dot

side; legs black; wings

prajbrachial vein forming a rounded, slightly obtuse angle at

its flexure,

very slightly curved inward from thence to

transverse vein slightly undulating, parted by half

the border, and by more than half

the praebrachial.

its

its tip

its

;

discal

length from

length from the flexure of

Length of the body 7

lines

;

of the wings 16

lines.

29. Rutilia saiiuatissiin».. Walk.
30.

Rutilia sapphirina,

n.

s.

See Vol. V,

p.

287.

Mas. Obscure purpurascenti-cyanea.


10

ME.

F.

WALKER ON

DTPTEBA. COLLECTED AT

capite argenteo, frontalibus atris, thorace

non

abdomine nigro

vittato,

interruptis splendidissime purpurascenti-cyaneis, tibiis

fasciis tribus

posticis fimbriatis, alis cinereis basi nigris.

Male.
talia

Dark purplish blue ; head vpith silvery white tomentum ; frondeep black, widening in front ; antennae black ; arista hardly

pubescent

abdomen black, with three interrupted
2nd band narrower than the 1st and
excavated on each side of the hind border, 3rd band

thorax not striped

;

briUiant purplish-blue bands

than the 3rd,
apical, very

broad

black at the base

;

legs black

;

;

;

hind

;

fringed

tibiae

from thence to

at its flexure, hardly curved inward

fourth of

its

its

tip

;

discal

more than onelength from the border, and by hardly more than half

transverse vein hardly undulating, parted by

its

wings cinereous,

;

prsebrachial vein forming a rounded, obtuse angle

little

length from the flexure of the praebrachial, which, like

near the border.

Length of the body 7

lines

it, is

very

of the wings 16 Unes.

;

Gen. GrTMNOSTTLlA, Macq^.
31.

Gymnostylia LUTEicoRNis,

n.

s.

Foem. Nigra, cinereo-tomen-

tosa, frontalibus atris perangustis, palpis testaceis, antennis luteis,

thorace

quatuor

vittis

nigris,

abdomine fulvo fusiformi macula basali
apud venas fuscescente

trigona, pedibus fulvis longiusculis, alis cinereis

subnebulosis.

Black, with cinereous

Female.

tomentum; head with

bristles

along

each side of the frontalia, which are deep black, linear and very
narrow; palpi testaceous; antennae luteous, 3rd joint short; arista
bare, slender

;

thorax with four slender black stripes

abdomen tawny, fusiform,

a

little

;

pectus hoary

longer and narrower than the thorax,

with a black triangular spot at the base, and with black spines at the
tip

;

legs tawny, rather long

femora

tarsi

;

black

;

and slender

;

tibiae

dai'ker

than the

wings cinereous, very slightly brownish-clouded

along the veins ; veins black, tawny at the base, praebrachial vein
forming a very obtuse angle at its flexure, almost straight from thence
to its tip

than

its

;

discal transverse vein almost straight, parted

length from the border, and by a

from the flexure of the prsebrachial
body 4 lines ; of the wings 7 lines.

;

alulae

Subfam. Sakcophagtdes, Walk.

Gen. Sarcophaga, Meigen.
32. Sarcophaga mendax. Walk.

See Vol. IV. p. 132.

Subfam. Muscides, Walk.
Gen. MiiscA, lAwn.
33.

Musca

costalis,

Walk.

See Vol. V.

p. 159.

by a

little less

more than its length
white.
Length of the

little


AND CEBAM.

GILOLO, TEBNATE,
34.

Musca

promittens, Walk.

35.

Musca

obtrusa. Walk.

11

See Vol. IV. p. 134.

See Vol. III.

p. 105.

Subfam. Anthomtides, Walk.

Gen. Atomogastee, Macq.
36.

Atomogaster biseriata,

n.

Foem.

s.

Cana, capite albo, fron-

talibus atris latiusculis, antennis nigris, thorace vittis tribus obscuri-

oribus indistinctis, abdomine vitta nigricante maculisque sex quadratis
nigris subtus testaceo, pedibus testaceis, alis cinereis.

Hoary ; head white

Female.

;

frontalia deep black, linear, rather broad

proboscis and palpi black, the latter slender, slightly curved

;

antennae

black, 3rd joint not reaching the epistoma; arista bare, stout at the

base

thorax with three slender, indistinct, darker stripes

;

;

abdomen

elongate-oval, testaceous beneath, with a blackish stripe, which

is

internipted on the hind border of each segment, and with three

quadrate black spots on each side ; basal segment not spotted
testaceous

base

;

discal transverse vein straight, parted

;

the border, and by nearly twice
verse

legs

by about

its

length from

length from the prsebrachial trans-

its

Length of the body 2f

alulae white.

J

;

wings cinereous ; veins black, testaceous towards the

lines

;

of the wings 4i

lines.

37.

Atomogaster TRiSERiATA,n.

Foem.

s.

Schistacea, capite albo,

frontalibus rufis, thorace vittis tribus obscurioribus indistinctis, abdo-

mine maculis sex elongatis

nigris,

segmentis albo marginatis, femoribus

apice tibiisque fulvis, alis cinereis.

Female.

Slate-colour

head white

;

frontalia red, linear

;

three very indistinct darker stripes

;

abdomen

;

thorax with

fusiform, a

little

longer

than the thorax, with three elongated black spots on each of the three
last segments ; hind borders of the segments white ; legs black
tibiae

and

tawny

by hardly

femora tawny ; wings cinereous

tips of the

at the base
less

;

than

lines

;

veins black,

length from the border, and by nearly twice

its

length from the praebrachial transverse

body 2^

;

discal transverse vein hardly bent inward, parted

;

alulae white.

its

Length of the

of the wings 4 lines.

Subfam. Helomtzides, FalUn.

Gen. Helomyza, Fallen.
38.

Helomyza interventa,

apice,

scutelli

abdomine

n.

s.

Fcem. Testacea, crassa, capite,

femoribusque

nigris,

alis

cinereis

antice

subluridis.

Female.

Testaceous, thick ; head black, bristly above, white in front

antennae testaceous,

black towards the tip

thorax

;

femora black

3rd joint short

abdomen

;

;

;

arista

plumose

;

scutellum

black, elliptical, not longer than the

wings cinereous, with a lurid tinge

in front;


ME.

12

WALKEn ON DIPTERA COLLECTED AT

F.

veins black, testaceous at the base

parted by a
full

twice

body 3

little

;

discal transverse vein straight,

length from the border, and by

its

Length of the

length from the prsebrachial transverse.

its

lines

more than half

;

of the wings 5 lines.

Gen. Detomtza.
39.

Dryomyza semicyanea. Walk.

See Vol. III. p. 109,

Gen. Sciomyza, FalUn.
40. Sciomyza? leucomelana. Walk.

See Vol. IV.

p. 144.

Subfam. Lauxanides, Walk.

Gen. LoNCHiEA, FalUn.
See Vol. IV.

41. Lonchaea? consentanea. Walk.

p. 146.

Subfam. Ortalides, Holiday.

Gen. Lampeogastee, Macq^.
42.

Lamprogaster superna,

n.

Testacea, capite supra

Fcem.

s.

nigro, oculis albo-marginatis, thoracis disco cyaneo,

purpureo,

alis cinereis basi

et

apud costam

abdomine supra

fulvis, striga transversa

guttaque antica exteriore nigris, striga costali apicali nigricante.
Testaceous, shining ; head black above, white about the eyes

Female.

mouth

large

;

;

antennae short, 3rd joint not more than half the length

scuteUum and disk of
and
broader than the thorax ; wings cmereous, tawny at the base and along
the costa, a black streak extending from the costa along the praebrachial
a black exterior dot on the radial
transverse to the prsebrachial vein
of the face

;

arista bare,

the scutum blue

;

pubescent at the base

abdomen

;

oval, purple above, a little shorter

;

vein,

and a blackish streak

at the tip of the costa

;

veins black, testa-

ceous towards the base; discal transverse vein straight, oblique, parted

by hardly one-third of its length from the border, and by about its

length from the prsebrachial transverse. Length of the body 5 lines;
of the wings 10 lines.

Gen. Plattstoma, Lafr.
43.

Platystoma potens,

n.

s.

Mas

et

Fam.

Cinerea, crassa, capite

ochraceo, thorace vittis septem nigris, abdomine

pedibus rufescentibus,

subtus

testaceo,

tarsis nigris basi testaceis, tibiis anticis

nigris, alis cinereis nigricante

apice

confertissime guttatis, halteribus tes-

taceis.

Male and Female.

Cinereous, broad, thick

about the eyes and behind
tennse ochraceous

;

;

;

head ochraceous, white

face with a slender piceous stripe

;

an-

3rd joint long, linear, about half the length of the

GILOLO, TERNATE,
face

whitish,

arista

;

CEEAM.

AJS^D

ochraceous at the base

bare,

seven slender blackish stripes

much

long, black, slender, stylate

legs dull reddish

;

;

shorter than the thorax

fore tibiae with black tips

;

thorax w ith

;

scutellum large, prominent

;

conical, testaceous beneath,

at the base

13

abdomen
oviduct

;

tarsi black, testaceous

;

wings cinereous, with very

;

numerous various-shaped blackish spots and dots which form irregular
bands ; veins black, tavniy along the costa, where there is a short lurid
streak in the middle

than half

;

discal transverse vein straight, parted

length from the very oblique prsebrachial transverse vein

Length of the body 6

testaceous.

This species

is

lines

by

less

much more than

length from the border, and by

its

;

its

halteres

of the wings 12 lines.

;

closely allied to P. producta, but the subapical cine-

reous band contains two dots.
44.

Platystoma pectoralis,

facie nigro biguttata,

n.

thorace

s.

vittis

3Ias. Cinerea, capite ochraceo,

quinque nigricantibus, pectore

sex luteis, femoribus apice luteis, tibiis luteis apice nigris, tarsis

vittis

basi pallide flavis, alis cinereis nigricante confertissime guttatis, halte-

ribus pallide flavis.

Cinereous

Male.

on each

;

head ochraceous, white along the eyes

side of the face

;

a black dot

antennae about half the length of the face

;

black; thorax with five blackish stripes; pectus with three

arista

luteous stripes on

each side

abdomen

;

thorax; femora with luteous tips;
tarsi pale

yellow at the base

conical, shorter than the

luteous, with black tips;

tibiae

wings cinereous, with very numerous

;

various-sized, partly confluent, blackish dots

transverse vein curved outward, parted by

length from the border, and by more than
prsebrachial transverse vein

body 4|

lines

;

;

its

less

discal

;

than half

its

length from the oblique

halteres pale yellow.

;

black

veins

much

Length of the

of the wings 9 lines.

Gen. Dacus, Fabr.
45.

Dacus strigifer, n.s.

Cyaneo-niger, facie rufescentestrigata,ocuhs

argenteo marginatis, palpis apice rufescentibus, antennis longis basi
rufescentibus, arista alba pubescente, thorace vittis tribus cinereis,
tarsis posterioribus

femoribusque albis apice nigris,

alis cinereis,

costa

striga basali fasciaque lata exteriore nigris.

Bluish black

;

head

silvery,

hoary behind and about the eyes ; face trianwhich is abbreviated towards the peri-

gular, with a reddish streak

stoma ; palpi with reddish
base

tips

;

antennae black, reddish towards the

3rd joint slender, very long, extending to the peristoma

;

white, pubescent, bare towards the tip,

joint

;

ward

;

much

;

arista

longer than the 3rd

thorax with three cinereous stripes, which are vmited hindpectus

cinereous

;

abdomen wanting

white, black towards the tips

with black

tijjs

;

;

legs black

;

fore coxae white

;

;

femora

posterior tarsi white,

wings limpid, black along the costa

;

a black discal


14

ME.

WALKEE ON DIPTEEA COLLECTED AT

F.

streak extending from the base to one-third of the length

broad irregular oblique band beyond the middle

;

a black

;

veins black

;

discal

by less than half its length from the
border, and by about its length from the very oblique praebrachial
transverse vein, which equals it in length ; halteres white.
Length of
transverse vein straight, parted

the body 6 lines
46.

of the wings 10 lines.

;

Dacus furcifer,

n.

Mas.

s.

Anthracina, cinereo-tomentosa,

antennis vix longis, arista pluraosa, thorace

pedibus longiusculis,

alis cinereis

apicem versus furcata, halteribus

linea costali exteriore

Male. Coal-black, with cinereous tomentuni
slightly tapering
arista

plumose

from the base to the

;

tip,

much

shorter than the face

much longer than the thorax

;

abdomen

;

which emits a

a narrow black oblique band before the middle,

;

and beyond the middle a very broad black band, which
the contrary direction

veins black

;

;

length from the

its

which is not more than half its length
Length of the body 5 lines ; of the wings 10 lines.

Dacus expertus,
nigris,

thorace

n.

costa exteriore

cinereis,

Fam. Cyaneus,

s.

vittis

oblique in

length from the straight, upright praebra-

its

chial vein,

que

is

discal transverse vein very slightly

curved outward, parted by about one-fourth of
border, and by less than

47.

;

linear,

legs rather long ; wings

apical part of the costa with a black line,

fork towards the tip

albis.

third joint of the antennae

;

thorax with three blackish stripes

;

narrower and very
cinereous

vittis tribus nigricantibus,

nigro bifasciatis, fascia 2* latissima,

tribus

cinereis,

halteres white.

;

palpis, antennis pedibus-

pedibus breviusculis,

alis

apicibusque nigris, venis transversis nigro

marginatis, halteribus testaceis.

Dark blue ;

Female.

palpi, antennae,

and legs black

antennae linear, slender, extending to the peristoma
cinereous stripes
little

;

pectus cinereous

;

abdomen

longer and naiTower than the thorax

;

3rd joint of the

thorax with three

;

elongate-conical, a

legs short, stout

;

;

wings

cinereous, black along the exterior part of the costa and about the
tips

;

transverse veins clouded with black

almost straight, parted by about half

by about

its

oblique

halteres testaceous.

;

wings 8
48.

its

;

discal

transverse vein

length from the border and

length from the praebrachial transverse vein, which

Length of the body 4

lines

;

is

of the

lines.

Dacus perplexus,

n.

s.

FcEnn.

Niger, capite luteo, facie nigro

biguttata, antennis luteis longis, arista nigra nuda, thorace vittis tribus
luteis,

pectore maculis duabus trigonis luteis, abdomine fulvo lato

striga brevi nigricante, pedibus luteis, alis limpidis, striga basali, vitta
costali dentata vittaque postica angulata fuscis.

Female.

Black

;

head pale luteous, with a piceous dot on the

with a round black dot on each side of the face

;

front,

and

3rd joint of the

antennae extending to the peristoma, very slightly tapering from the

base to the tip

;

arista black, bare

;

thorax with a luteous stripe, with


GILOLO, TERNATE,
two luteous humeral
streaks

AND CEEAM.

16

and with two hindward

calli,

lateral

luteous

pectus with a large luteous triangular spot on each side

;

abdomen tawny,

elliptical,

with a slight blackish stripe, which

much broader than

abbreviated in front, longer and

is

the thorax

much
ovi-

;

duct long, slender, lanceolate; legs luteous; wings limpid, with a

brown

which emits an angle in the middle, the angle

costal stripe

parallel to

an angular brown stripe on the hind border ; an oblique

brown streak proceeding from the base, and a brownish dot near the
hindward ; veins black, tawny towards the base ; discal transverse
vein undulating, parted by a little more than one-fourth of its length
from the border, and by a little more than its length from the straight,
upright prsebrachial transverse vein ; halteres pale yellow. Length of
the body 6 lines; of the wings 12 lines.
tip

Gen. SoPHiEA, Walk.
49.

SoPHiRA PUNCTiFERA,

n.

Testacea, antennarum ar-

Foem.

s.

ticulo 3° brevi oblique truncato, arista nuda, thoracis

abdominisque

lateribus nigro punctatis, pedibus breviuscuhs, alis nigricantibus latiusculis albido conferte punctatis.

Female.

Testaceous

antennae not nearly reaching the epistoma

;

joint short, obliquely truncated at the tip

arista bare

;

and abdomen with black points along each
longer than the thorax

;

side

;

abdomen

;

oviduct short, lanceolate

;

;

3rd

thorax, pectus,
conical, not

legs rather short

and slender; wings blackish, rather broad, adorned with numerous
transverse

whitish

points

parted by one-fourth of

discal

;

vein

transverse

nearly

straight,

length from the border, and by about

its

length from the straight, upright praebrachial transverse vein.

of the body 3 lines

;

its

Length

of the wings 6 lines.

Gen. Obtalis, FalUn.
50.

Ortalis punctifascia,

n.

s.

Fcem. Cyanea, capite nigro, oculis

albo marginatis, antennis rufis, arista plumosa, pedibus nigris, tarsis
albis,

alis

albis nigro quadrifasciatis, fascia 3*

punctum album

inclu-

dente, 4* strigam costalem emittente.

Female.

Dark

blue, shining; head black, white about the eyes; an-

tennae dark red, very short

the 2nd

;

arista

plumose

;

;

much

3rd joint conical, not

abdomen very

oviduct black, furrowed ; legs black

;

wings white, with four black bands;

little

tarsi white,

1st

longer than

longer than the thorax

;

with black tips

band basal;

3rd

much

broader than the others, including a white costal point; 4th emitting
a black costal streak to the tip of the wing

an angle at

its

straight, parted

than

its

by half

its

length from the border, and by

;

the latter

much more

length from the praebrachial transverse vein; halteres black.

Length of the body 2|
51.

praebrachial vein forming

;

junction with the discal transverse vein

lines

Ortalis iEQUiFERA,

n.

;

of the wings A\
s.

Mas

et

lines.

Fcem.

Cyanescenti-nigra,


MB.

16

WALKER ON DIPTEBA COLLECTED AT

r.

capite antico rufo, oculis albo marginatis, antennis rufis, arista nuda,

thorace vitta lata cinerea, abdomine basi fulvo, coxis femoribusque
anticis fulvis, alls cinereis vitta fasciisque

duabus exterioribus nigris.

Bluisb black; head black, red in front, white about
antennae red, not reaching the epistoma ; 3rd joint rather

Male and Female.
the eyes

;

long, slightly tapering to the tip

cinereous stripe

j

;

arista bare

thorax with a broad

;

abdomen

pectus cinereous;

linear,

black,

tawny

towards the base, broadest in the female and with a prominent oviduct ; legs black ; fore coxa3 and fore femora tawny ; wings cinereous,
with a black stripe extending from the base along the costa and thence

descending to the middle of the disk ; two exterior black bands, which
are united on the costa, the second apical; discal transverse vein
straight, parted

by one-third of

length from the border, and by

its

more than its length from the praebrachial
body 2i hues of the wings 4i lines.

transverse.

Length of the

;

Ortalis concisivitta,

52.

n.

s.

Mas. Rufa,

scutello, metathorace, pectoris disco

oculis albo marginatis,

abdominisque apice cyaneis,

alis

nigricantibus, margine postico fascia apicibusque cinereis.

Red, shining ; head white about the eyes

Male.

ing the epistoma ; 3rd joint long, linear

antennae nearly reach-

;

arista simple

;

;

scutellum,

metathorax, disk of the pectus and abdomen towards the tip blue
abdomen conical, not longer than the thorax ; wings blackish, cinereous along the hind border and towards the tips, which are blackish
a cinereous band between the transverse veins ; veins black ; discal

by

transverse vein straight, upright, parted

less

than one-fourth of

length from the border, and by hardly more than

Length of the body 2^

praebrachial transverse.

its

lines

;

its

length from the
of the wings 4^

lines.

Gen. Tetpeta, Meigen.
63.

Tbypeta retorta,

Fcem.

n. s.

scutello

abdominisque basi

anticis

tibiis

Picea, subtus testacea, capite,

femoribus

testaceis, pectoris disco piceo,

tarsisque testaceis, alis limpidis nigricante angulatim

bivittatis.

Piceous setose, testaceous beneath

Female.

;

head and antennae

ceous, the latter not reaching the epistoma, 3rd joint linear

plumose

;

scutellum testaceous

;

disk of the pectus piceous

ovate, testaceous towards the base, a

terebra

flat,

conical

concave towards the
;

the latter

tip,

and

is

;

nearly parallel to another blackish

opposite the concavity of the fore stripe
nearly straight, parted by one-third of

by a

little less

than

its

of the body 4 lines

;

arista

abdomen

longer than the thorax

also broadest at the base,

is

testa-

and fore femora testaceous wings
stripe, which is broadest at the base and

tibiae, tarsi

;

limpid, with a blackish costal

stripe

little

;

;

;

and forms a right angle

discal transverse vein oblique,

its

length from the border, and

length from the praebrachial transverse.
of the wings 8 lines.

Length

OTLOLO, TEENATE, AtTD CEK.nr.

17

Subfani. Skpstues, Walk.

Gen. Calobata, Fabr.
54. Calobata impingcns. Walk.

Calobata GUTTicoLLis,

f)5.

nigris, thorace antico guttis

See Vol. IV.
n.

p. Ifil.

Foem. Nigra, capite guttis duabus

s.

duabus lateralibus

femoribus anticis

uigris,

apice tibiis(jue anticis nigvis, taisis anticis albis, femoribus posteriori-

bus picco
Female.

fasciatis, alis

Testaceous

;

fuscescentibus cinereo trimaculatis.

vertex with a black dot

disk of the front black

;

thorax with a black dot on each side in front
the tips and fore

tibiae

black

fore tarsi white

;

a piceous band near the tips, which

fore

;

;

posterior femora with

also piceous

ai'e

^

femora towards

;

wings brownish,

with three rather indistinct pale cinereous dots, of which the two

>

band

exterior form an interrupted

Length of the body 5-5|

lines

Calobata diffundens,

56.

veins with the usual structure.

;

of the wings 8-9 lines.

;

n.

s.

Foem.

Subcinereo-nigra, capite

chalybeo, oculis albo-marginatis, palpis antennis abdominisque apice
rufescentibus, pedibus luteis, femoribus anticis dimidio apicali tibiis-

que

femoribus posteriori-

anticis nigris, tarsis anticis albis basi nigris,

bus subdilatatis nigro

trifasciatis, tibiis tarsisque posticis nigris, alis

cinereis nigricante bifasciatis.

Black

Female.

palpi reddish

abdomen
and

head clialybeous, white about the eyes

abdomen with

thorax and

;

legs luteous

fore tibiae black

;

fore

;

black

;

lines

hind

;

;

posterior

tibiae

and hind

wings cinereous, with two blackish bands, the 2nd apical

;

;

halteres white.

Length of the

of the wings 8 lines.

Subfam. Psilides, Walk.

Gen. Angitula, Walk.
57. Angitula longicollis, JValk.

See Vol. IIL

p. 123.

Gen. Nerius, Wied.
68. Nerius duplicatus, Wied.

Fam.

See Vol.

III. p. 125.

niPPOBOSCID.E,

Leach.

Gen. Oenithomyia, Leach.

Oruithomyia Batchianica, Walk.

5!>.

See Vol. V.

TERNATB
Fam.

p. .SOO.

.

STRATIOMID^,

Haliday.

Gen. Ptilocera, Wied.
1.

Ptilocera 4-dentata, Fabr.

lilNN.

PROC-

;

femora for half the length from the

veins black, with the usual structure

body 5

mouth and
tomentum

fore tarsi white, black at the base

femora slightly dilated, with three black bands
tarsi

;

slight cinereous

lanceolate, nearly twice the length of the thorax, with a

reddish tip
tips

;

;

— ZOOLOaY.

See Vol.

I.

p. 7-

*

2


18

MR.

F.

WALKER ON DIPTERA COLLECTED AT
Fam. ASILID^, Lmch.
Subfam. Laphrites, Walk.

Gen. Laphria, Fair.
2.

Laphria

socia,

Walk.

See Vol. III. p. 84.

Subfam. Asilites, Walk.

Gen. AsiLTJS, Linn.
Walk.

3. Asilus condecorus,

Male 1 Abdomen
4.

witli

Asilus normalis,

See p.

7-

a brownish tinge
n.

Mas

s.

et

sexuaha very large.

;

Cinereo-niger, capite sub-

Fam..

anrato, mystace e setis albis nigrisque, thorace vittis tril)us anticis
cinereis,

abdomine

fasciis

fulvis,

femoribus apices versus tibiisque

rufescentibus, his nigro strigatis, alis nigris basi cinereis, halteribiis

sordide testaceis.
Fa;m.
Abdomine stylato.
Male and Female. Cinereous black ; head slightly

gilded, with hoary

hairs beneath

;

mystax with many white

black bristles

;

pectus and three stripes on the fore part of the thorax

cinereous

;

abdomen with bands

bristles

and with a few higher

of tawny hairs and

tomentum

;

legs

femora towards the tips and tibiae reddish, the latter streaked
with black ; wings black, cinereous towards the base, the cinereous part
stout

;

extending in the disk beyond the middle

veins black, reddish at the

;

base; lower branch of the cubital vein undulating; halteres dingy

Abdomen

Female.

of the male
style.

Abdomen

Male.

testaceous.

;

lanceolate

;

sexualia small, elongate.

elongate-conical, with narrower bands than those

the four apical segments forming a black, shining, slender

Length of the body 7-8

lines; of the

Gen. Ommatitjs,
6.

Ommatius

6.

Leptogaster exacta,

retrahens, Walk.

wings 12

lines.

Illiger.

See Vol. IV.

p. 88.

Gen. Leptogaster, MeAgen.
n.

s.

Mas.

Picea, capite pectoreque canis,

antennis nigris basi luteis, thorace obscure rufo
cantibus,

pedibus pallide

luteis,

vittis tribus

femoribus nigro

bifasciatis,

nigritibiis

posticis apice tarsisque nigris, alis subcinereis apice nigro marginatis,

halteribus pallide flavescentibus.

Male.

Piceous

;

head hoary behind and beneath

;

antennae black,

luteous at the base; thorax dark red, with three blackish stripes;
sides

and pectus hoary

;

abdomen very

slender

;

legs pale luteous

;

femora with two black bands, which are most distinct on the hind pair
tarsi and hind tibiae towards the tips and knees black ; wings slightly
cinereous, black-bordered at the tips
yellowish.

Length of the body 6

lines

;

;

veins black

;

halteres pale

of the wings 10

lines.


GILOLO, TEKNATE, AND CER.VAl.

SYEPHID.^,

Fam.

See Vol.

SjTpluis cricctoruni, Fahr.

III. p. \)7

MUSCID^,

Fam.

Leach.

SrnPHUS, Fahr.

Grew.
7-

19

Latr.

Subfam. Tachinides, Walk.

Gen. EuRTGASTER, Macq.
8.

Eurygaster remittens, Walk.

See Vol. IV.

p. 125.

Subfam. Dexides, Walk.

Gen. Dexia, Meigen.

\).

Dexia PARALLELA,
antennisque
albidis,

n.

Mas.

s.

Nigra, angusta, cylindrica, palpis

apice piceis, arista plumosa, thorace vittis tribus

rufis, his

abdomine chalybeo-nigro

pedibus

atrisque,

albidis

fasciis

longis, alis vitreis vitta costali nigra.

Male.

Black, long, slender, cylindrical

on each

side

deep black

frontalia broad,

red

;

head white, with a black band

;

between the eye and the epistoma
;

face slightly oblique

front prominent

;

antennae and palpi

;

the former piceous towards the tips, nearly reaching the epi-

stoma

;

3rd joint linear, slender, rounded at the

the length of the 2nd

arista

;

plumose

and postscutelhim

stripes, the lateral pair broad, interrupted; pectus

whitish, the former with

chalybeous black,

two black bands on each

twice the length of the thorax

full

whitish fore borders and deep-black hind borders

wings vitreous, with a black costal
cinereous

;

forming a slightly obtuse angle at
parted by half

its

tip

its

stripe,

;

its

;

;

is

interlined with

pra;brachial

vein

inward

discal transverse vein slightly undulating,

length from the flexure of the praebrachial
;

abdomen

;

segments with

flexure, slightly curved

length from the border, and by a

of the body 6 lines

side
;

legs long, slender

which

except along the costa

veins pale

from thence to

about four times

tip,

thorax with three whitish

;

;

than

little less

its

Length

alulae large, white.

of the wings 10 lines.

Gen. RuTiLiA, Desv.
10. Rutilia atribasis,

11.

Walk.

RuTiLiA EXCELSA,

n.

See Vol. V.
s.

Mas.

p. 288.

Cyaneo-viridis, capita albo strigis

duabus lateralibus anticis nigris, frontalibus atris, abdomine cupreo,
basi vitta et scgnientorum marginibus posticis nigris, pedibus nigris,
alis fuscescenti-cinereis basi

Male.

Bluish green

;

fusco notatis.

head white, with a black streak on each

extending from the borders of the eyes to the epistoma

deep black, very narrow on the vertex, widening much

;

side,

frontalia

in front

2*

;

thorax


20

MB,

r.

WALKEE ON DIPTEEA COLLECTED AT

tinged here and there with cupreous

abdomen cupreous, with the

;

segment and a slender stripe deep black; the following segments,
which are black along their hind borders, bluish green ; legs black

1st

;

wings orownish cinereous, tinged with brown near the base
brachial vein forming a rounded right angle at

curved inward from thence to

tip

its

brachial.

its

prse-

flexure, very slightly

discal transverse vein slightly

;

undulating, parted by less than one-third of

and by very much more than

its

;

its

length

fi'ora

the border,

length from the flexure of the prae-

Length of the body Ih

lines; of the wings 17 lines.

Subfam. Mitscides, Walk.

MuscA, Linn.

Gren.
12.

Musca promittens. Walk.

See Vol. IV.

p. 134.

Subfam. Ortalides, Halidm/.

Plattstoma, Lafr.

G-en.
13.

Platystoma potens, Walk.

C

See

E B

p. 12.

AM.

Fam. STRATIOMIDJi:, Holidmf.
Greii.

Ptilocera, Wied.

1.

Ptilocera 4-dentata, Fabr.

2.

Clitellaria obesa.

See Vol.

I.

p. 7-

Gen. Clttellaria, Meigen.
Walk.

See Vol. V.

p. 232.

TABANID^,

Fam.

Leach.

Gen. Tabantjs, Latr.
3.

Tabanus serus,
albis,
callis

humevalibus

apud costam

s.

Fcem.

Cinereus, capite subtus pectoreque

testaeeis, abdoraine

;

duabus

vittis

pedibusque

;

head beneath and pectus

callus black, very slender, broader in front

antennae tawny with cinereous

tomentum towards

;

palpi cinereous

with two ferruginous tomentose stripes

abdomen tawny, elongate-conical ;
cinereous, brown along the costa
;

tawny

at the base

of the wings 12 lines.

;

legs

;

humeral

tawny ;

;

the base, 3rd joint

slightly curved, black towards the tip, with a very small

ture,

ferrugineis,

fulvis, alis cinereis

fuscis.

Black, with cinereous tonientum

Female.

white

n.

antennis fulvis apice nigris, thorace

horn; thorax

calli

tarsi

testaceous

black

;

wings

veins black, with the usual struc-

halteres pale.

Length of the body 6

lines


GILOLO, TEIINA.TE,
Earn.

AND

ASILID^,

C'EUAM.

21

Leach.

Subfam. Laphuites, Walk.

Geu. Lapheia, Fahr.
See Vol. V.

p. 146.

4.

Laphiiti tnstis, Dot.

.'3.

Laphria Vulcanus, Wied.

See Vol.

6.

Laphria ostensa,

Mas.

n.

mystace nigro, thorace

s.

p. 10.

I.

Nigra, aureo-pilosa, capite aurato,

quatuor lateralibus obliquis cinereis,

strigis

abdoniine subaurato segmentorum marginibus subauratis apice nigro
alis

limpidis dimidio apicali nigro.

; head brightly gilded in
composed of some black bristles third joint of the
antenna; elongate-fusiform thorax with two cinereous oblique streaks
on each side abdomen with cinereous toraentum ; sides and hind

Male.

front

Black, wholly clothed with gilded hairs
raystax

;

;

;

;

borders of the segments slightly gilded;
thickly clothed with long gilded hairs

shining; legs

tip black,

wings limpid

Length of the body 8

black; haltcres pale yellowish.

wings 14

;

apical half

;

lines; of the

lines.

Subfam. Asilttes, Walk.

Gen. Ommatitjs,
7.

Ommatius iNEXTRiCATus, n.

s.

Tlliger.

Mas.

Subaurato-cinereus, capite

aurato, mystace e pilis aureis, antenuis nigris basi fulvis, thorace lineis

segmentorum abdominalium marginibus

cinereis,

posticis flavescenti-

auratis, sexualibus rufis, pedibus nigris robustis, tibiis fulvis, alis luridocinereis.

Male.

Black, with cinereous slightly gilded

with white hairs beneath
black,

tomentum

mystax with gilded

;

tawny towards the base, 3rd

with slender cinereous stripes

;

;

head gilded,

binstles

abdomen with a

antennjE

;

joint elongate-conical

thorax

;

yellowish gilded band

on the hind border of each segment sexualia deep red, shining
legs very stout ; tibiae tawny ; wings lurid-cinereous, darker cinereous
hindward and towards the tips ; veins red halteres dull reddishLength of the body i> lines of the wings 1() lines.
;

;

;

;

Gen. Leptogastee, Meigen.
8.

Leptogaster magnicollis,

n.

s.

Mas. Fulva, capite nigro antiee

argentco, mystace albo, antennis fulvis basi apiceque nigris, thorace

maculis duabus nigricantibus, abdomine tenui clavato aj)icem versus
nigro, alis sublimpidis costa apiceque cinereis.

Male.

Bright tawny

with white bristles
the tips

;

head black above,

;

;

silvery white in front

;

mystax

antenna; tawny, black towards the base and at

thorax with a blackish spot on each side in front

with pale gilded tomentum

;

abdomen

;

j)ectus

slender, clavate, full thrice the

length of the thorax, black towards the tip

;

tarsi

much

darker than