146 CERAMBYCID.S. 



and angulated anteriorly at the apex ; sixth to tenth subequal, com- 

 pressed, each angulate anteriorly at the apex ; eleventh in the <5 a 

 little longer, in the $ scarcely longer, than the tenth. Prothorax 

 broader than long, dilated on each side in the middle, narrowed in 

 front, strongly rugose above. Elytra long, with the sides sub- 

 parallel. Legs moderately long, with the femora sublinear, the 

 hind pair scarcely extended past the third abdominal segment. 

 Prosternum vertical posteriorly and furnished there with a median 

 keel or tubercle. 



149. Trachylophus sinensis, Gahan, A. M. N. H. (6) ii, p. 60 (1888). 



Dark brown, rather densely covered all over with a somewhat 

 silky pubescence of a uniform greyish or yellowish-grey colour. 

 Head impressed with a short 

 median groove above between the 

 eyes. Prothorax strongly corru- 

 gate above, most of the ridges 

 intricately convoluted, a few only 

 near the middle take a longitudinal 

 course; two of these, separated 

 posteriorly by a median furrow, 

 diverge slightly as they run up to 

 the middle, and then converge 

 and meet a little in front of it, 

 separating again near the apex. 

 Elytra truncated in a slightly 

 oblique direction at the apex and 

 ;pj g yg armed each with a very short 



Trachylophus sinensis, Gahan. sutural spine ; the surface very 

 minutely and densely punctulate. 



Intercoxal process of the prosternum moderately broad, with a 

 feeble median carina, which ends posteriorly in a more or less 

 prominent posteriorly directed tubercle. 

 Length 25-38 mm. 

 Hob. Burma : Karen Hills (Fea) ; South China (Bowring). 



Genus RHYTIDODERA. 



Khytidodera, White, Cat. Col. B. M., Lvngic. p. 132 (1853) ; Lacord. 

 Gen. Coteopt. viii, p. 268 (1869). 



Type, R. bowringii, White, a species from China. 



Range. India, China, Burma, Siam, and Malay Peninsula. 



Eyes rather closely approximated above, reaching nearly to a 

 line with the antennal condyles in front. Antennae of tf shorter 

 than the body in most species, a little longer in some ; h'rst joint 

 rather short, not reaching to front margin of prothorax; third 

 longer than the fourth ; fifth to tenth, and exceptionally the third 

 'and fourth, compressed in front and more or less sharply angulate 

 at the apex ; antenna? of $ shorter and less robust, with the joints 



