CHALJENOSOMA. 



189 



coloration is that of the type, but there may be some variation in 

 this respect. 



Head with vertex convex and finely punctate, not granulate, 

 frontal elevations broadly transverse, clypeus triangular, convex*. 

 Antenna? extending to about the middle of the elyira ; first 

 segment long and clul>-shaped, second and third very small, as is 

 usual ; n the genus, the fourth the longest ; the following segments 

 more or less nearly equal. Prothorax broader than long, sides 

 feeblv rounded, the four ;mgles acute, the surface with fine and 

 scattered, not granulate, punct ures ; across the middle is a shallow 

 sulcus which is more distinct at the sides than in the middle. 

 JScatellum triangular, its surface impunctate and not granulate. 

 Elytra broader at base than prothorax, with the usual post-basal 

 transver-e depression, the surface strongly and closely punctate 

 throughout, the punct ures being coarser in the depression than 

 elsewhere. Unnderside: first segment of the front and inter- 

 mediate tarsi dilated in the male. 



Length, 5-5 .J mm. 



Nilgiri Hills. 



Type in the British Museum. 



When studying the insects of this genus, which is apparently 

 confined to South India, it is difficult to resist the conception that 

 at least three species, namely Oh. metallica, Ch. fulv. tarsi's and 

 Ch. cuprea, are one and the same ; they present differences which 

 are more pronounced in coloration than in structure, although 

 the latter is not absolutely uniform ; but it seems impossible to 

 settle this point without applying the test of experimental 

 breeding. 



129. Chalsenosoma antennata, Jacoby. 



Chalcenosoma antennata, Jac, Ann. Soc. Ent. Belg. xlvii, 1903, 

 p. 115. 



Body rather elongate, scarcely widened behind. Colour metallic 

 green ; antenna? and legs yellow -brow 7 n ; labrum black. 



Head scarcely percept ibly punctate, minutely granulate ; frontal 

 elevations indistinct, bounded behind by a deep fovea; clypeus 

 broadly triangular. Antennae extending nearly to the apex of the 

 elytra; first segment elongate, club-shaped, second and third 

 segments very small, as is usual in the genus, fourth segment the 

 longest, this and the following segments robust, rather widened 

 and slightly curved in the male. Prothorax about twice as broad 

 as long, sides nearly straight ; surface finely granulate and with 

 some very minute punctures, rather strongly transversely sulcate. 

 Scutellum, triangular, with surface impunctate. Elytra broader 

 at base than prothorax, with a feeble depression behind the 

 base, strongly and closely punctate, the interstices slightly 

 transversely wrinkled, the ex'remely fine granulation of the 

 surface not distinctly visible. Underside covered with pubescence ; 

 first segment of the anterior tarsi strongly dilated in the male. 



