308 Mr. F. P. Pascoe on some new Genera of 



In a nearly allied genus, Psebium ^, the male has the abdo- 

 minal segments nearly equal in length, and the antennse a little 

 longer than in the female, in which they are about the length of the 

 body; in the latter sex these organs appear to be twelve-jointed; 

 the last joint, however, is simply notched in the middle; or per- 

 haps it would be more correct to say that the last joint is anchy- 

 losed to the preceding one. But in the present genus the twelfth 

 joint is as distinct as any other, although smaller and somewhat 

 differently formed. In other respects this genus differs from 

 Psebium in its rounded prothorax, elytra hollowed out at the 

 suture, and shorter antennse. With regard to the peculiar ex- 

 cavation of the abdomen in the females of this and some other 

 genera of Longicorns, nothing is known ; patches of hairs and 

 other modifications of this structure are found also in some 

 genera of the subfamily Obriinse, in Megaproctus (an anomalous 

 African genus), in Cartallum, Penthea, and Sympkyletes ; in the 

 latter the peculiarity is sometimes found in both sexes, but not 

 always in the same species. The unique example of the curious 

 insect described below was recently taken at Cape Town by 

 Mr. Roland Trimen. 



Chorothyse vesparia, 



C. nigra, antennis, elytris, tibiis tarsisque Isete fulvis. 



Hub, South Africa. 



Head and prothorax black, opake, finely and closely punctured, 

 clothed with rather longish erect hairs ; scutellum black, gla- 

 brous and shining at the apex; elytra clear fulvous, shortly 

 pubescent, not extending beyond the posterior coxse; abdomen 

 and femora black, with loosely set longish hairs, the excavated 

 portion of the former with close-set fulvous hairs ; tibise and 

 tarsi clear fulvous, the former with longish yellow hairs. Length 

 6 lines. 



Nephithea. 



Frons convexa, baud sulcata, inter oculos quadrata. 

 Prothorax subcylindricus, postice attenuatus. 

 Elytra abbreviata, alse quam abdomen breviores. 

 TibicB posticae elongatae, lineares. 



Head exserted, the front convex and quadrate between the 

 eyes, no groove above the epistome. Antennary tubers oblique, 

 well marked anteriorly, contiguous at the base. Eyes narrow, 

 roundly emarginate. Antennse imperfect; the scape rather 

 short, obconical; third, fourth, and fifth joints about equal, each 

 of them twice as long as the scape; the rest wanting. Prothorax 

 narrower than the head, subcyhndrical, from about the middle 



* Pascoe, Joum. of Entom. ii. p. 289. 



