580 Transactions South African Philosophical Society, [vol. xiii. 



Length 1\ mm. 



Hab. Lake N'Gami. 



Resembles 0. flavimargo, Orb., differs by the non-testaceous sides 

 of the prothorax, the long, instead of short, pubescence of the apical 

 part of the elytra and of the pygidium, the head without ridge and 

 having only a small tubercle between the eyes, the remote punctua- 

 tion of the prothorax which consists of little unequal and moderately 

 fine punctures in the centre, and on the sides of fine punctures inter- 

 mixed with very large and very remote ones, instead of the punc- 

 tuation being uniformly moderately close, moderately large and 

 consisting of slightly unequal punctures." 



Onthophagus consobrinus ( 2 ) Pering., Cat. i., p. 259. 



Male : Black, very shiny, with hardly any metallic tinge, or a very 

 indistinct one. Clypeus deeply and broadly scooped in the anterior 

 part, the margin strongly reflexed and angular on each side of the 

 scooped part as in the 2 , on the vertex is a highly raised arcuate 

 lamina forming a semicircle the ends of which abut on the base of 

 the head behind the posterior edge of the eyes and which is continued 

 transversely for a short distance along the base to a little short of 

 the central part where there is a transverse smooth fold, this semi- 

 circular wall is a little blunt in front, and the space it encloses is 

 much more simply punctate than the same part in the 2 , the 

 punctuation of the clypeus is not so rugose, and not plicate ; in the 

 great development, the centre of the prothorax is strongly sloping 

 and there is on each side of the slope a subtransverse impression 

 surmounted by a smooth, round callus at the top of the declivity ; 

 the rest is as in my description of the ? (loc. cit.) but in well- 

 preserved examples every granule in the intervals of the elytra 

 bears a minute sub-flavescent hair, and the deep, somewhat scat- 

 tered punctures of the metasternum carry a long, stiff hair of the 

 same colour. 



Length 9-11 mm. ; width 6-7 mm. 



Hab. Southern Rhodesia (Sebakwe) ; Northern Rhodesia (Kafue 

 River; Feira). This species ranges from Lake Chad through British 

 and German East Africa and reaches Mozambique and Southern 

 Rhodesia. 



Onthophagus carbonarius, Klug, Cat. i., p. 244. 



0. glaber, Boh., Cat. i., p. 239. 



I think that d'Orbigny is right in suggesting that 0. carbonarius 

 is the $ of 0. glaber, but not in suggesting that 0. vicarius, Pering., 

 is the same species. 



