136 CEBAMBTCIDJ5. 



the base, where also they pass downwards on to the sides.. 

 Elytra nearly two and a half times longer than their width at the 

 base ; truncate at the apex, with the sutural angles subdentate ; 

 the surface 'densely but very finely puuctulate. 



Length 17-22 ; breadth 4|-6 mm. 



Hob. Baluchistan (Indian Museum}, Ormarah ( W. D. Gumming} ;. 

 Bushire ( W. D. Gumming) ; Algeria ; South Europe. 



135. Derolus discicollis, sp. n. 



Allied to D. mauritanicus, Buq., which it closely resembles in 

 size, form, and coloration, but is readily distinguishable from it 

 by the presence of a large, smooth, somewhat rounded area that 

 occupies almost the whole disc of theprotborax. On each side of this 

 distinctly limited space, the prothorax is uneven and rather densely 

 covered with pale grey pubescence, a few short hairs of the same 

 colour being scattered over the discal smooth area ; near the base 

 the prothorax is without striae but is crossed by two grooves, the 

 anterior one sinuate, the other directly transverse, both extended 

 at each side into the deep oblique lateral groove, which is as 

 broad posteriorly, and as sharply edged as in D. mauritanicus, but 

 gets narrower as it reaches the middle of the side, where it joins a 

 smooth depressed area lying just in front of the middle. Each 

 elytron ^s rounded externally at the apex and armed with a short 

 spine at the suture. 



Length 18 ; breadth 5 mm. 



Hab. Karachi (F. W. Townsend}. 



136. Derolus demissus, Pascoe (Cerambyx) Trans. Ent. Soc. (2) v. 



p. 21 (1859). 



? Cerambyx volvulus, Fab. St/st. Eleuth. ii, p. 271 (1801). 

 Pachydissus (Derolus) demissus, Gahan, A. M. N. H. (6) viL 



pp. 27 & 30 (1891). 



Pitchy-brown, rather thinly covered with greyish pubescence. 

 Eyes large, almost contiguous above in the male. Antennae of 

 the $ one-fifth or so longer than the body, those of the $ shorter ; 

 third and fourth joints feebly nodose at the apex, the fourth only 

 a little shorter than the third. Prothorax rounded at the sides, 

 transversely plicate above, occasionally nearly smooth on the 

 middle of the disc ; with a narrow, glabrous, and smooth excised 

 area on each side. Elytra minutely and densely punctulate, the 

 pubescence rather thin, each elytron subtruncate and unarmed at 

 the apex. Metasternum with a small but distinct process projecting 

 forwards at each of the antero-lateral angles, these processes 

 partly but not completely shut off the epimera from the 

 acetabula of the middle coxae. 



Length 15-17 ; breadth 4-4 1 mm. 



Bab. India : Benares, Sylhet, Tranquebar, Nilghiris ; Philippine 

 Islands ; China. 



