450 CHEYSOMELID^E. 



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. 



$ . 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 rofoustum, 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. 



d". Broad and robust. Head not very strongly or closely 

 punctured, without strigae; 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. 



2 . Elytra with basal depression more strongly marked and 

 punctured, also strongly 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 iiigriventre, Baly, Trans. Ent. Soc. (3) iv, 1867, 

 p. 278. 



Metallic green, cupreous or blue ; abdomen black ; labrum and 

 basal joints of antennae fulvous ; tarsi piceous. 



