450 
CHRYSOMELIDiE. 
placed in a triangle at base of clypeus, this portion slightly rugose ; 
antennae with the terminal joints widened, basal five metallic blue 
or greenish, third and fourth equal. Thorax nearly three times 
as broad as long, sides strongly rounded, surface convex, punc- 
tured like the head. Scutellum. violaceous, sparingly punctured. 
Elytra with deep transverse depression below the base, scarcely 
more strongly punctured than the thorax, punctures mostly 
arranged in irregular rows, interstices finely wrinkled in places 
and aciculate. 
2 . Elytra transversely rugose at sides near base, with a longi- 
tudinal costa near the lateral margins. 
Length 6§-8 mm. 
Hob. Darjeeling ; Nilgiris ; Assam : Khasi Hills ; Tibet. 
A large and handsome species, with dark blue thorax and bright 
cupreous elytra ; there seems to be no difference between the 
Indian specimens and those from Tibet described and previously 
considered distinct by me. Lefevre gives C. auripenne, Motsch., 
as a synonym of this species, but neither the size nor the coloration 
of the elytra as given by that author agrees with Baly’s insect. 
786. Colasposoma robustum, Jac. P. Z. S. 1881, p. 446. 
Metallic green ; elytra with the margins narrowly and a trans- 
verse band below the base purplish, entirely dark blue or copper 
on the upper surface. 
c? . Broad and robust. Head not very strongly or closely 
punctured, without striga?; clypeus separated by a triangular, 
subrugose depression from the face; antennae bluish-black, last 
five joints black, moderately widened, basal three or four joints 
metallic blue, third and fourth equal. Thorax more than twice 
as broad as long, sides rounded, surface moderately strongly and 
closely punctured. Scutellum subquadrate. Elytra with a short 
transverse depression below the base, rather more finely punc- 
tured than the thorax, interstices finely aciculate here and there. 
Tibiae strongly curved and dilated at apex. 
5 . Elytra with basal depression more strongly marked and 
punctured, also strongH transversely wrinkled ; tibiae straight. 
Length 8-10 mm. 
Hob. Southern India : Malabar coast ; Nilgiris ; Ceylon. 
Very variable in coloration, sometimes metallic cupreous above 
and beneath. Can be separated by the fine puncturation of the 
head, thorax and elytra and the want of rugosities on the head. 
Both sexes have an elytral depression, but in the male this is 
feeble and has only a few deeper punctures ; the purplish band 
on the elytra is generally found in the female only. 
7o7. Colasposoma nigriventre, Baly, Trans. Ent. Soc. (3) iv, 1867 
p. 273. 
Metallic green, cupreous or blue ; abdomen black ; labrum and 
basal joints of antenna? fulvous ; tarsi piceous. 
