510 CHRTSOMELID^. 



the base than the thorax, not deeply but distinctly transversely 

 depressed below the base, punctured in very closely approximate 

 rows, the punctures rather stronger than those on the thorax. 



Length 7-8 ram. 



Hob. Burma ; Malay Peninsula 



A handsome and easily recognized species closely resembling in 

 coloration Colasposoma pretiosum, Baly, from which the much 

 more subcylindrical thorax and the structural characters of Chry- 

 sochus at once separate it. 



886. Chrysochus mouhoti, Baly, Joum. Ent. ii, 1864, p. 223. 



Violaceous or green ; a trigonal patch before the middle of the 

 elytra and the lateral margins purplish ; labrum and basal joints 

 of antenna? fulvous. 



Subquadrate-ovate. Head rather closely and strongly punctured, 

 strigose above the eyes, a dee]) central elongate cavity between 

 the eves ; antennae extending below the base of the elvtra, basal 

 joint metallic blue or green, following three joints fulvous, the 

 rest black, slightly widened, longer than broad, third joint longer 

 than the second. Thorax twice as broad as long, transversely 

 subquadrate, lateral margins straight at base, feebly rounded in 

 front, the surface closely punctured like the head. Scutellum 

 subquadrate, sparingly punctured. Elytra with a very shallow 

 depression below the base, very closely punctured in somewhat 

 regular rows, punctures of the same size as those on the thorax, 

 sometimes finer on the posterior portions of the elytra, the 

 interior of the depression slightly more strongly punctured and 

 with a purplish transverse, trigonal patch, not quite extending to 

 the suture. Underside and legs blue or green. Prosternum very 

 broad. Claws bifid. 



Length 9-9 1 mm. 



H(tb. Burma : Tharawaddy ; Siam : Tonkin. 



The purplish elytra! patch can only be distinctly seen in the 

 green specimens ; in those of violaceous tint is is only just indicated 

 by a slightly darker colour of the corresponding part of the 

 elytra. In spite of some slight differences in the puncturation I 

 cannot separate the Burmese specimens from those from Siam. 



Group ENDOCEPHAL1NI. 



Oblong or subovate, glabrous above ; antennae filiform or with 

 widened terminal joints ; eyes not surrounded by sulci. Thorax 

 transverse with distinct lateral margins ; tibiae not emarginate at 

 apex. Claws appendiculate. Prosternum oblong ; anterior margin 

 of thoracic episternum convex. 



Three genera of this group occur in India, to which, though 

 widely divergent in general appearance, the above structural 

 details apply. 



