591 Transactions Soutli African Philosophical Society, [vol. xiii. 



Onthophagus axillaris, Boh., Cat. i., p. 192. 



0. crinitus, d'Orb., Ann. Soc. Ent. Fi\, lxxi., 1902, p. 131. 



0. criniger, d'Orb., Ann. Mus. Civ. Genov., xli., 1901, p. 326. 



" But little shiny, black, head and prothorax blackish green, 

 elytra with a minute rufous testaceous macule at the shoulders, and 

 a smaller ante-apical one in the sixth interval ; it is clothed on the 

 whole upper side with a long, flavous pubescence. In the $ the 

 head is closely granulate, the sides simple, the clypeus bi-dentate, 

 the irons slightly arcuately carinate, the vertex with a very short, 

 hardly distinct carina interrupted in the centre, and situated cross-wise 

 in a line with the middle of the eyes. Prothorax closely and strongly 

 granulate, not impressed above the posterior angles, and simple ; 

 sides strongly sinuate behind, base non-marginate ; elytra broadly 

 striate, intervals plane, strongly and sparsely granulate; pygidium 

 sparsely granulate. 



Length 7^ mm. 



Hab. Lake N'Gami." 



d'Orbigny considers 0. criniger as somewhat near 0. axillaris, 

 Boh., but I cannot differentiate it. 0. axillaris differs from 

 its very close ally, C. obtusicornis, by the more acuminate clypeus, 

 which is more deeply emarginate in front and more dentate there, 

 the genae are also projecting further. 



Onthophagus pilosus, Fahr., Cat. i., p. 196. 

 pellax, Pering., loc. cit., p. 259. 



Onthophagus senescens. 

 0. scniculus, Pering., Cat. i., p. 257. 



The name scniculus having been already given by Fabricius to a 

 species of Onthophagus, I propose to alter the specific name scniculus 

 into senescens. 



Onthophagus bituber, d'Orbign., 

 Annal. Mus. Genov., xli., 1901, p. 37. 

 " Somewhat shiny, head and prothorax sub-obscurely bronze- 

 green, elytra fuscous with the suture bronze-green; pygidium 

 greenish black; antennal club lightly testaceous; briefly flavous 

 pubescent on the upper side. Head finely and simply punctate and 

 having a few large punctures intermixed on the gena3 and also on the 

 temples, clypeus rugose, truncate in front ; frontal part arcuately 

 carinate, vertex with a small, erect lamina truncate at apex and 

 situated between the hind margins of the eyes ; prothorax granulate 



