328 Transactions South African Pliilosophical Society. ■ vol. xii. 



and bears in the anterior part a sharp, erect horn, about 7 mm. 

 long, triangular, flat in the anterior part, and carinate in the middle 

 behind ; prothorax abruptly declivous in front, the declivity bounded 

 by a sharp ridge, slightly emarginate in the centre, sinuate on each 

 side, produced into a sharp point above the lateral impression, and 

 from there into a long, tiiangular, sharp process directed backwards, 

 the anterior angles are obtuse, the sides are not excavate, and the 

 impression is elongate, the anterior margin is slightly emarginate 

 in the centre, the whole surface is finely granular, but there are two 

 smooth spaces on the posterior part, one on each side of a very 

 distinct, median impressed line ; elytra as broad as the prothorax, 

 convex, sub-gibbose at middle, finely striate with the intervals 

 vaguely punctulate ; the supra-marginal carina reaches from the base 

 to a third of the length ; the basal joints of the intermediate and 

 posterior tarsi are very broadly dilated, and as broad as long. 



Female : The shape and sculpture of the head is similar to that 

 of the male, but instead of having an erect tooth in the anterio 

 part, the head slopes from a transverse carina joining the two gense 

 towards the edge of the clypeus, this carina is not much more 

 raised than the suture of the genae, and is hardly sinuate ; the 

 prothorax is very little declivous in front, and the declivity is 

 bounded by a nearly obsolete, short transverse ridge, not much more 

 than 6 mm. in length, the impressed line in the centre of the posterior 

 part of the disk is very well defined, the two smooth spaces are 

 larger than in the male, the lateral impressions are deep and not in 

 a line with the transverse ridge, the surface is as granular as in the 

 male, and the elytra and legs are similar. 



Length 36-39 mm. ; width 20-22 mm. 



Hab. Ovampoland (Omrramba), Zambesi Eiver, teste Lans- 

 berge. 



Cathaesius rhinocekos, Klug, 



Monatsb. Berl. Acad., 1855, p. 655 ; Peters' Eeis. n. Mossamb., 

 1862, p. 239, pi. xiii., figs. 5, 6. 



Black, quite opaque. 



Male : Clypeus emarginate in the centre, genge projecting a little 

 beyond the sutural part of the clypeus ; the apical part of the head 

 bears a vertical compressed tooth about 5 or 6 mm. in height, 

 laminate towards the end, and ending in a sharp point in the middle 

 at tip, the anterior part is transversely plicate and the genae 

 granular ; prothorax strongly declivous in the anterior part, and 

 deeply excavated there on each side, the upper part of the declivity 



