1866.] mr. f. p. pascoe on the coleoptera of penang. 513 



Sestyra. 



Antennae lineares, scapo pyrlformi. 

 Caput collo constricto, prothorace latius. 

 Tarsi subcequales. 



Head broad, rather short anteriorly, constricted behind, the fore- 

 head concave. Eyes narrowly emarginate, lateral, not approximate 

 above. Antennas sublinear, nearly as long as the body ; the scape 

 rather short, claviform ; third joint twice as long as the scape ; the 

 rest gradually shorter to the eighth or ninth. Prothorax subcylin- 

 drical, narrower than the head, sulcately constricted at the anterior 

 third and at the base. Elytra narrow, entire, subparallel. Legs 

 unequal, slender ; femora thickened towards the apex ; tibite slen- 

 der ; tarsi subequal. 



The broad head, strongly constricted behind into a distinct neck, 

 and the pyriform scape are peculiarly characteristic of the curious 

 little Longicorn forming the type of this genus. 



Sestyra cephalotes. (PI. XLI. fig. 3.) 



S. nigra; prothorace albo bifasciato ; elytris fusco-nigris, bast 

 brunneo plagiatis ; pedibus articulisque duobus basalibus an- 

 tennarum nitidis. 



Black, nearly glabrous ; head finely punctured, a few silvery hairs 

 in front ; prothorax closely punctured, silvery-white hairs lining the 

 grooves and forming two bands ; scutellum narrow at the base, gra- 

 dually widening behind and truncate, covered with a silvery-white 

 pubescence ; elytra closely punctured, each puncture with a short 

 white procumbent hair, at the base an oblong patch of reddish 

 brown extending nearly to the middle, the apex pointed ; body be- 

 neath with a close silvery pile ; legs glossy black, the anterior tibia; 

 and tarsi luteous ; antennae with the basal and second joints black, 

 shining, the remainder pale brownish. Length 4 lines. 



MlMISTENA. 



Antennae setacece, scapo pyriformi. 



Caput collo subconstricto, prothorace angustius. 



Tarsi postici et intermedii elongati. 



Elytra integra. 



Head not elongate anteriorly, slightly constricted behind, the 

 forehead broad. Eyes lateral, narrowly emarginate, not approximate 

 above. Antennae setaceous, longer than the body, ciliated beneath ; 

 the scape pyriform ; third joint longest ; the fourth short ; the next 

 two gradually increasing in length ; the seventh to the tenth slightly 

 decreasing ; the eleventh as long as the third. Prothorax broader 

 than the head, subcylindrical, but flattish above, constricted ante- 

 riorly. Elytra not wider than the prothorax, rather contracted be- 

 hind the shoulders, entire. Legs unequal ; femora thickened towards 

 the apex; tibiae slender ; tarsi with the basal joint of the interme- 

 diate and posterior pair elongate. 



