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bounded by an acute ridge or edge.

$ . The elytra more closely and strongly punctured although
comparatively finely so, but the punctures are larger than those
on the thorax ; the rugosities at the sides of the elytra are scarcely
more strongly developed than those in the male.

Length 4% mm.

Hob. Bengal ; Pondicherry ; Bangalore ; Assam ; Burma ;
Ceylon ; Sumatra.

Specimens from Ceylon are generally metallic cupreous in colour.
The species seems closely allied to G. splendidum, Fabr., which is
a doubtful species, but according to Baly an insect of 7 mm. in
length. This author in his description of Fabricius's supposed
species makes no mention of the sex he had before him, without
which no recognition of a species in this genus is certain. One
of the principal characters of distinction is the black abdomen. I
cannot find sufficient differences between the type from Sumatra
and the Indian specimens to warrant their separation.

788. Colasposoma splendidum, Fabr. (Chrysomela) Ent. Syst. \,
1792, p. 324 ; Baly, Trans. Ent. Soc. (3) iv, 1867, p. 275.

Metallic green or blue ; antennae, palpi and tarsi black.

cJ . Head finely and remotely punctured, finely strigose above
the eyes ; clypeus with a deep fovea at base ; basal joint of antennae
metallic blue or green, terminal five joints slightly thickened, longer
than broad, third and fourth equal. Thorax more than twice as
broad as long, sides strongly rounded, disc evenly and finely punc-
tured. Elytra with short depression below base, rugose within
the depression, rest of disc punctured like the thorax, the punctures
irregularly placed. Body and legs metallic green. The male
organ is short, only moderately curved, with high lateral ridges,
the apical portion is strongly deflexed and gradually terminates in
a point.

Len</th 6-7 mm.



452



CHEYSOMELID^E.



Hub. " India or." ; also Java and other Malayan islands.

In this species the puncturation of the elytra is very fine and
not very closely arranged, but it is somewhat doubtful whether
the description above would apply to the specimen on which
Fabricius founded his tvpe more accurately than to one or other
of the closely allied species belonging to this puzzling group.



789. Colasposoma asperatum *, Le/cv. Cat. Eumolp. 1885, p. 104,
note 2.

" Metallic green, aeneous or bluish-black ; labrum and antennae

fulvous, terminal joints of
latter often dark ; legs some-
times fulvous.

" <$ . Head and thorax
densely punctured, the latter
transversely depressed behind
the anterior margin, sides
rounded and margined ; tarsi
fuscous. Elytra transversely
depressed below the shoulders,
densely punctured, sides finely
substrigose ; anterior tibia) di-
lated at apex.

" 9 . Elytra more strongly
depressed below shoulders,
sides strongly strigose, a row of
tubercles placed near the mar-
gins extending from shoulders
nearly to apex." (Leftvre.)

Length 4f-6 mm.
Hub. Bengal : Burma ; extending to China.
The above description as given by Lefevre is scarcely detailed
enough for certain recognition of the male, while the female is
better distinguished on account of the rows or row of tubercles
at the sides of the elytra. In the male of the Indian specimens
which I refer to this species the thorax is proportionately wide,




Fig. 156. Colasposoma asperatum.



* COLASPOSOMA PROSTEBNALE, Jac. Ann. Soc. Ent. Belg. xl, 1896, p. 303.

It is somewhat doubtful whether this species is specifically distinct from
C. asperaturn as far as the male is concerned, as I have not seen the type of the
latter and the description is too vague to be certain. The female, however (if
this is rightly referred to the same species, C. prosfernalc), certainly differs from
that of C. asperatum in having the sides of the elytra simply rugose not tuber-
culate. In all other respects the two species are identical. In C. prosternale
the male organ seems also to differ from that of the allied species, instead
of its being strongly curved it is more slender and straight, the apex is widely
opened and contains a kind of hardened tubercle : this is the same in the two
specimens dissected.

The species has been obtained at Tharawaddy in Burma, and Mandar in
Bengal, also in the Andaman Islands ( 2 $ ).



COLASPOSOMA. 453

with very strongly rounded sides and a deeper transverse depres-
sion near the middle behind the anterior margin than is generally
found in other species.

The male organ is strongly curved, terminating in an acute point
preceded by an elongate shallow cavity.

790. Colasposoma andrewesi, Jac. Ann. Sue. Ent. Bely. xxxix, 1895,

p. 272.

Dark violaceous blue or cupreous ; basal joints of antenna and
the labrum fulvous.

5 . Head finely aud moderately closely punctured, the punctures
well separated ; clypeus very obsoletely separated from the face ;
latter without tubercle or groove ; antennae with the basal six
joints fulvous, rest black or entirely fulvous, third and following
two joints equal, terminal joints elongate, scarcely widened.
Thorax twice as broad as long, sides rounded ; surface strongly,
closely and evenly punctured, but the intervals between the
punctures much wider than the punctures, sides rather more
closely punctate. Scutellum broader than long, distinctly punc-
tured. Elytra with some rows of strong punctures near the
suture only, rest of the disc occupied by two or three rows of
acute tubercles, extending but decreasing in number towards the
apex. Breast and legs metallic aeneous, abdomen dark ; femora
sometimes dark fulvous, unarmed.

Length 4-5 mm.

Hab. Burma: Paungde, Moulmein.

Very closely allied to C. aspemtum, but differs in the much more
numerous elytral tubercles which in the present insect form several
rows. It is possible, however, that this form may be only a local
race. The male is unknown.

Species ivith cupreous or purplish hands, glabrous above.

791. Colasposoma ornatum, Jac. P. Z. S. 1881, p. 445.

Var. obscurofusciatum, Jac. Ann. Soc. Ent. Bely. xxxix, 1895, p. 273.

Beneath blackish, above aureo-cupreous ; margins of elytra and an
angulate longitudinal band on the disc of latter, blue or purplish.

cf . Head very closely and rather strongly punctured, strigose
above the eyes ; clypeus punctured like the head ; antennae black,
basal joint metallic, third joint longer than the fourth, terminal
joint widened. Thorax twice as broad as long, sides round;
surface cupreous, punctured like the head, the margins more or
less purplish-blue. Scutellum subquadrate, with a few punctures.
Elytra very finely and irregularly punctured near the suture, more
strongly and less closely so at the sides, scarcely perceptibly
depressed below base. Breast and legs dark cupreous ; abdomen
nearly black.

$ . Larger ; sides of elytra more strongly punctured, more dis-
tinctly depressed and with rugose interstices below the shoulders.



454 CHRYSOMELID^E.

Far. Above metallic dark green or blue ; thorax with purplish
margins ; elytra with purplish band as in typical form.

Length 5-7 mm.

Hob. Southern Bombay : Belgaum ; Sangir.

Not unlike some forms of C. pulcherrimum, but with longer and
more pronounced purplish elytral band, which extends angularly
nearly to the suture at the base. C. aureo-vittatum, Baly, has
differently sculptured upper surface. In the variety, which I
formerly considered a distinct species, the elytra are entirely
blue with a darker purplish band, but there is no structural
difference of importance.



792. Colasposoma auripenne (PI. II. fig. 9), Motsch. in Schrenck,

Reise Amur, ii, p. 179 (1860).
Colasposoma pulcherrimum, Baly. Dcscnpt. new gen. $ sp. Phytoph.

1864, p. 15.
Colasposoma mutabile, Baly, Trans. Ent. Soc. (3) iv. 1867, p. 273.

Metallic green, aeneous or purplish ; antennae (base excepted)
black ; elytra aureous, trigonal patch below base and the suture
and margins purplish-blue.

cf . Head strongly and rather closely punctured, with raised
strigae on the sides above the eyes ; clypeus strongly punctured, a
distinct tubercle placed at the middle of its base ; antennae with
the apical five joints distinctly widened. Thorax twice as broad
as long, sides rounded, surface strongly and closely punctured, more
conspicuously at sides than at middle. Scutellum subquadrate,
sides oblique and pointed at apex. Elytra scarcely perceptibly
depressed below base, more strongly punctured than the thorax ;
punctures very closely placed in irregular rows, larger on the side
below the shoulders, the interstices at the latter place slightly
rugose.

$ . Head strongly rugosely-punctured and strigose, punctura-
tion of thorax and elytra more closely placed than in the male,
sides of elytra strongly rugose and wrinkled.

Far. Above metallic green, elytral purplish spot obscure.

Length 4|-5 mm.

Hab. Amur ; India ; Burma ; Andaman Islands ; Malayan
Subregion ; China.

I identify this as C. auripenne of Motsch. It is comparatively
easy to distinguish in the typical form, which has the elytra blue,
the sutural and lateral margins and transverse spot below base
purplish. The species must not be confounded with C. ornatum,
Jac. nor C. aureovittatum, Baly, in both of which the sculpture is
quite different. C. mutabile, Baly, does not seem to differ, and as
the type of C. pulcherrimum, but not of C. mutabile, is in this
author's collection, the insect has evidently been described in
error under two different names.

The specimens from the above different localities show no
marked differences, nor can I find any in the male genitalia.



COLASPOSOMA.. 455

793. Colasposoma aureovittatum, Bah/, Descrint. new gen. Sc sp.

Phytoph. 1864, p. 14.

Metallic green ; basal joints of antennae fulvous ; thorax with a
transverse cupreous band ; elytra with a broad longitudinal band
near suture and another near margins, aureo-cupreous.

d . Head closely and rather strongly punctured ; labrum ful-
vous ; antennae filiform, terminal joints not thickened, basal joint
metallic green, third and fourth equal. Thorax quite twice as
broad as long, sides rounded, surface strongly convex, crowded
with oblong deep punctures evenly distributed. Elytra oblong,
very closely and rather irregularly punctured, punctures fine near
suture, strong and more regularly arranged in rows at the sides,
base with a very feeble depression below shoulders.

2 . Thorax more narrowed in front ; elytra with deep trans-
verse lateral depressions at base, sides strongly transversely rugose
to behind the middle.

Lenc/th 5^-6 mm.

Hob. India; Assam,

Closely allied in coloration to C. ornatum, Jac., but the elytra
are more strongly punctured and rugose, and the longitudinal
bands are cupreous instead of purplish.

794. Colasposoma versicolor, Lefev. Bull. Soc. Ent. France, 1887,

p. clxxiv.
Colasposoma bifasciatum, Jac. Mem. Soc. Ent. Belg, vii, 1900,

Above metallic green, elytra with a narrow reddish-cupreous
longitudinal band ; beneath obscure greenish-aeneous ; antennae
and legs fulvous, knees metallic aeneous.

d . Head closely and finely punctured, without strigae ; clypeus
obsoletely separated from face, punctured like the head ; labrum
fulvous ; antennae slender, third and following joints very elongate,
nearly equal, basal five fulvous, rest black. Thorax twice as
broad as long, convex, sides rather strongly rounded near base,
slightly narrowed towards apex, surface with similar punctura-
tion to that on the head, but with a narrow central smooth line.
Elytra not wider at base than the thorax, strongly and closely
punctured, base with a scarcely perceptible depression, interstices
closely transversely rugose at the sides extending across disc nearly
to the middle, punctures arranged in somewhat regular rows near
the suture ; a cupreous longitudinal band extends from base to
within a short distance of the apex, this band gradually narrows
and approaches towards the suture near the apex. Abdomen
obscure cupreous ; tarsi fuscous.

$ . Thorax less strongly transverse, only feebly convex, sides
more distinctly narrowed in front ; tibiae not dilated at apex ; legs
more or less aeneous.

Lengtli 5-6 mm.

Hob. Southern India : Madura ; Nilgiris.



456 CHIITSOMELID^.

Closely allied in coloration to banded forms of C. villosulum,
Lefev., but without any pubescence, the thorax perceptibly more
strongly punctured and the punctures more widely separated ;
also much like C. downesi, Baly, but in that species the elytra!
rugosities do not extend so far inwards nor downwards and the
puncturation is finer and closer, also the elytra are without the
narrow cupreous bands.



Group EDUSINI.

Elongate, head immersed in thorax. Thorax subconical with dis-
tinct lateral margins. Elytra generally transversely rugose at sides.
Tibiae not emargiuate at apex, claws appendiculate. Prosternum
oblong. Anterior margin of thoracic episternum convex.



Genus ABIRUS.

Abirus, Chanuis, Gen. Colcopt. x, 1874, p. 310 ; Lefev. Cat, Eumolp.
1885, p. 113.

Type, A. ceneus, Wiedem., from Java.

Range. India, China, and Malayan Subrcgion.

Characters those of the group. Body elongate and subcylindrical,
with strongly developed elytral rugosities, sometimes pubescent
above. Antennae with terminal joints more or less widened.
Thorax broader than long, with rather straight sides and pointed
anterior angles. Legs somewhat robust ; tibiae gradually but
slightly widened towards apex; first joint of tarsi triangular,
shorter than the following two united ; claws appendiculate.

The forms in this genus are very similar in shape and appear-
ance to those belonging to the genus Dermorhytis, but differ in that
the sides of thorax are not angulate and the anterior margin of
the episternum is convex not concave.

795. Abirus angustatus, Lefev. Bull. Soc. Ent. France, 1887,
p. clxxv.

" Body beneath brownish-aeneous, above finely pubescent,
greenish or cupreous ; labruin, palpi and antenna brownish-
testaceous, tarsi blackish.

" Oblong- elongate, parallel-sided. Head densely substrigosely
punctured. Thorax nearly twice as long as broad, densely punc-
tured, punctures uneven in size. Elytra below base scarcely
perceptibly impressed, regularly punctate-striate near suture,
outer disc densely transversely substrigose, very minutely
pubescent towards apex.

" Length 5^-6 mm.

" Hob. Hindustan : Bhamnad." (Lefevi-e.)



ABIRUS. 457

I know no species of Abirus with a thorax nearly twice as long
as broad, and 1 am unable to refer any Eastern form known to ine
to Lefevre's species.

796. Abirus elongatus, sp. n. (PI. II, fig. 10).

Obscure cupreous or greenish ; antennae and legs fulvous ;
beneath obscure aeneous, finely pubescent.

c?. Very narrow and elongate. Head densely punctate and
rugose throughout; labrum fulvous; antennae scarcely extending to
middle of elytra, third to fifth joints rather elongate, nearly equal,
sixth much shorter, apical joints more or less stained with fuscous.
Thorax subcylindrical, half as broad again as long, sides straight ;
surface densely punctured, punctures not larger than those on the
head ; interstices very minutely and sparingly punctate, transversely
rugose at the sides. Scutellum broader than long, impunctate.
Elytra closely and finely punctate-striate near the suture, trans-
versely rugose at the sides from base to apex. Legs fulvous or
obscure aeneous.

Length 5|-6^ mm.

Hab. Sikhim : Kurseong (Colls. Urutisels Mus. <$ Jacoby).

Very closely allied to A.angustatus, Lefev.,but the thorax broader
than long, the tarsi not black ; more narrowly elongate than any
of the allied Indian species, sometimes aeneous above or green
with cupreous lateral margins or entirely cupreous.

797. Abirus rubripes, Lejev. Cat. Eumolp. 1885, p. 114, note 1.

" Beneath subcupreous-aeneous, above bright metallic green,
sometimes golden cupreous ; labrum, palpi, antennae and legs rufo-
fulvous. Thorax closely punctured, finely strigose at the sides.
Elytra somewhat regularly punctate-striate on the inner disc,
sides more strongly and irregularly so, interstices transversely
rugose.

" Length 4g 5 mm.

"Hob. Ceylon." (Lefevre.)

The above description is not detailed enough for certain identi-
fication of the species.

798. Abirus andamansis, Lefcv. Bull. Soc. Ent. Belg. xxxv, 1891,

p. cclxix.

"Greenish-aeneous or seneous; labrum, palpi and antennae fulvo-
testaceous, terminal five joints of the last fuscous ; body beneath
and legs piceous.

" Oblong-elongate, subcylindrical. Head strongly punctured,
substrigose behin'd the eyes, a smooth narrowly elongate space on
the middle of the front. Thorax much wider than long, sides
nearly straight, surface convex, strongly punctured. Scutellum



458



CHRYSOMELIDJE.



smooth. Elytra scarcely perceptibly depressed below base, very
strongly punctured, at sides finely transversely strigose, sparingly
longitudinally costate ; shoulders prominent, densely punctured.
Head and thorax with short golden hairs, elytra with rows of
erect golden pubescence.

" Length 7-8 mm.

" Hob. Andaman Islands." (Lefevre.)



799. Abirus igneicollis, sp. n.

Dark blue or violaceous ; antennae and legs nearly black ; head,
thorax and scutellum golden cupreous.

$ . Head closely semirugosely punctured ; clypeus distinctly
separated from the face, punctured
like the head ; labrum, palpi and
mandibles piceous ; antennae with
the terminal five joints very elongate
and slightly dilated, third and fourth
equal, slender, last joint reaching
beyond the middle of the elytra.
Thorax subcylindrical, strongly trans-
verse, the lateral margins rather
strongly rounded at the middle, an-
terior angles produced into an acute
point ; the surface extremely closely
and evenly punctured, the punctures
more crowded at the sides, the inter-
stices at the latter place wrinkled,
those on the disc impressed with some
very minute punctures. Scutellum
bright cupreous, smooth. Elytra
wider at the base than the thorax,

subcylindrical, the shoulders prominent, deeply impressed within ;
the puncturation very similar to that of the thorax, the inter-
stices below the shoulders transversely rugose as far as the middle;
the suture near the apex accompanied by a deep, short, elongate
sulcus. Posterior tibiae strongly widened at the apex ; claws
appendiculate. Prosternum subquadrate ; anterior margin of
thoracic episternurn convex.

c? . Antennae with the terminal five joints broadly dilated.
Far. Above entirely dark blue or cupreous.
Length 7-7 1 mm.
Hob. Burma (Coll. Brit. Mus.).

This is a species in which the sexes differ greatly in the struc-
ture of the antennae, a rare occurrence in this genus. The male
is as usual further distinguished from the female by the dilated
first joint of the anterior tarsi.




Fig. 157. Abirus igneicollis.



459



800. Abirus ceylonicus, sp. n.

Piceous, head and thorax with slight aeneous gloss ; legs
fulvous.

Head extremely closely and rather finely punctured ; clypeus not
separated from the face, its anterior margin slightly concave ;
labrum fulvous ; antennae slender, scarcely extended to the middle
of the elytra, piceous. Thorax about twice as broad as long, sides
only slightly deflexed, lateral margins feebly rounded, the surface
punctured like the head. Elytra subcylindrical, the shoulders
tuberculate, the surface strongly transversely rugose, without
punctures, the sides with three or four longitudinal rows of
tubercles. Legs dark fulvous. Body beneath with greenish gloss,
finely pubescent and punctured.

Length 6| mm.

Sab. Ceylon (Coll. Jacoby).

Well distinguished from any of its allies by the sculpturing of
the elytra.



Group MYOCHROINI.

Body clothed with scales or hairs, subcylindrical or oblong in
shape. Antennae subfiliform or with strongly thickened terminal
joints. Thorax with distinct lateral margins. Prosternum often
provided with grooves at the sides for lodging the antennas. Tibiae
often emarginate at apex, claws appendiculate.

This group contains a number of genera which possess most varied
structural characters, although all have in common a convex shape of
the anterior thoracic episternum and a pubescent or scaly upper
surface. The Indian genera, however, are but few and not difficult
to separate.

Key to the Genera o/Myochroini.

A. Intermediate and posterior tibiae emar-

ginate at apex PACHNEi>Honus,p.460.

B. Intermediate and posterior tibiae not

emarginate at apex.

a. Colours metallic.

'. Scutelluru transverse EURYPEI.TA, p. 464.

V. Scutellum oblong.

a*. Last joint of antennae longer than

broad ACBOTHINIUM, p. 461.

6 2 . Last joint of antennae broader than

long HETEROTHICHUS, p. 463.

b. Colours non-metallic LOPHEA, p. 462.



4GO CHRYSOMELIDJE.



Genus PACHNEPHORUS.

Paclmephorns, Hedtenb. Fauna Austr. i, 1848, p. 569; Sail/, Journ*
Ent. ii, 1865, p. 436; Chapuis, Gen. Coleopt. x, 1874, p. 323
Weise, Ins. Deutschl. 1893, p. 282.

Type, P. pilosus, Rossi, from Europe.

Range. All parts of the world, except Australia.

Elongate, nearly cylindrical, sparingly or moderately pubescent.
Head deeply inserted in thorax ; eyes small ; antennae about half
as long as the body, terminal joints strongly thickened, as broad
as long. Thorax subcyliudrical, nearly as long as broad, narrower
than the elytra, with distinct lateral margins, the anterior margin
rather strongly produced in the middle. Elytra generally punctate-
striate, the surface often clothed with scale-like pubescence or true
hairs. Prosternum oblong with deep grooves at the sides for the
reception of the antennae. Mesosternum short and transverse.
First abdominal segment as long as the rest of the segments
united. Legs moderately stout, pubescent or clothed with scales ;
intermediate and posterior tibiae more or less distinctly emarginate
at their apices ; claws appendiculate (in some European species
simple).



801. Pachnephorus bretinghami, Baly, Journ. Linn. Soc., Zool.

xiv, 1878, p. 256.

Pachnephorus plagiata, Jac. Ann. Mus. Civ. Genova, xxxii, 1892,
p. 913.

Piceous with aeneous gloss, clothed with whitish scales ; antennae
and legs obscure rufo-piceous.

Head strongly punctured ; excavated between eyes ; clypeus
transverse, thickened at the base. Antennae about a third the
length of the body, terminal five joints fuscous. Thorax scarcely
broader than long, sides straight and diverging from base to
far beyond the middle, thence rather abruptly rounded and
converging to the apex, above convex, subcylindrical, deeply
punctured ; clothed with deeply bifid, narrowly oblong, adpressed
scales. Elytra broader than the thorax, convex, deeply excavated
below basilar area, deeply and coarsely punctate-striate, punc-
turation rather finer towards the apex ; surface clothed with
similar scales to those on the thorax, forming here and there ill-
defined patches.

Length 2| mm.

hob. Bengal : Pusa ; Calcutta ; Burma : Bhamo ; Sumatra.

The general ground-colour is piceous (not black as given by
Baly) with more or less asneous gloss. In well preserved specimens
the elytra have a number of small whitish pubescent spots. The




ACBOTHIXIUM. 461

species is of somewhat broad, flattened shape. On more carefully
comparing my P. playiuia with Baly's type 1 find that it cannot be
separated.

802. Pachnephorus impressus, EosenJi. Tlnere Andal. 1856, p. 310.
Pachnephorus couvexicollis. Eabi. Trans. Ent. Soc. Land. (3) iv
1867, p. 95.

Dark aeneous or cupreous. Head coarsely and closely punctured ;
anterior border of clypeus distinctly
angulate-emarginate, hinder margin not
thickened, surface coarsely punctured.
Thorax broader than long, very convex
above, coarsely and closely punctured,
clothed with bifid scales ; sides obliquely
divergent from base to beyond the middle,
thence sharply rounded and convergent to
apex; middle of disc glabrous. Elytra
oblong-ovate, subcylindrical, strongly and
closely punctate-striate, interstices clothed
with white scales that form small spots.
Antennae, tibiie and tarsi more or less
fulvous.

Fig. 158. Length 2| mm.

Pachnep/ivrus imprcssiis. Hub. Europe; Africa; India: Bengal;

Philippines ; Macassar.

Much more elongate and narrowly subcylindrical than P. breting-
hami, the thorax strongly constricted at base, sides distinctly
angulate before middle. The species seems to have a wide
geographical distribution if indeed all really represent the same
form, but I am quite unable to separate Baly's type in the Brit.
Mus. from the European species ; this latter has also been recorded
as occurring in Ashanti (Weise, Ins. Deutschl.).



Genus ACROTHINIUM.

Acrothiniuni, Marshall, Journ. Linn. Soc., Zool. viii, 1864, p. 47 ;



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