PEEISSUS. 257 



margin on each side white ; scutelluin white ; elytra dull velvety 

 black, banded with ashy and grey pubescence ; the first band 

 begins at the suture just behind the scutelluin, passes obliquely 

 backwards, then diverges from the suture, and turns almost trans- 

 versely towards the outer margin, which it nearly reaches ; the 

 second is a transverse or slightly arcuate baud of an ashy-white 

 colour, which crosses at about the middle and gradually widens 

 towards the suture ; the third is a transverse band of a darker 

 grey colour, which covers a little more than the apical fifth of the 

 elytra. Body beneath with the first two abdominal segments and 

 two bands 011 each side of the breast, one longitudinal the other 

 oblique, ashy white ; the hinder segments of the abdomen covered 

 with dark grey pubescence. Head minutely granulose, not raised 

 between the antennae, the front regularly rounded off above so as 

 to form a continuous curve with the vertex. The antenna? extend 

 some distance beyond the middle of the elytra in the <5 , not to 

 the middle in 5 '> apical joints slightly thickened in $ . The hind 

 femora extend past the apex of the elytra by more than a third oti 

 their length in the d 1 , and by about one fourth of their length in 

 the 2. 



Length 8-14 ; breadtJi 2-4 mm. 



Hob. Sikhim ; Burma : Euby Mines district (Ddherty) ; Tenas- 

 serim : Thagata (Fed) ; Siam. 



294. Perissus aper, Chevr. (Xylotrechus) Mem. Soc. It. Set. de Liege, 

 xviii, p. 326 (1863). 



Black ; head covered with ashy-grey pubescence, an elongate 

 median spot on the face and two small rounded spots on the vertex 

 glabrous ; prothorax with a broad longitudinal black band that 

 extends along the middle of the disc and gradually widens poste- 

 riorly, the sides and the rest of the disc densely covered with ashy- 

 grey pubescence; scutelluin white; elytra marked each with a 

 short, narrow, median, ashy-grey vitta at the base and two oblique 

 ashy-grey bands, the first a little before, the second behind the 

 middle, the first band interrupted near the middle of its length, 

 the second prolonged anteriorly along the suture ; from the second 

 band a sutural vitta of the same colour extends to the apex, 

 widening out a little posteriorly ; body beneath black, densely 

 covered with ashy-grey pubescence at the sides and between and 

 behind the middle coxaj. Head densely punctate on the glabrous 

 black spots, the spot oa the face sometimes marked with a few 

 very feebly raised lines. Antennae less than half the length of the 

 body, the last seven joints thickened and opaque, first four sub- 

 nitid, third shorter than first, scarcely longer than fourth. Pro- 

 thorax subcylindrical, longer than broad, narrower than the elytra. 

 Elytra gradually and slightly narrowed from base to apex ; outer 

 angles of the truncate apex feebly dentate. Hind femora extend 

 by nearly one-third of their length past the apex of the elytra in 



vdL. i. s 



