190 Tfdumclions South African Philosopliical Society, [vol. xii. 



broad : tlic colour, instead of being dull black, is dull bronze ; the 

 cephalic horn is a little more curved and the apical spur of the 

 anterior tibiae is not so thick nor does it curve inwardly at tip. 



Female imknown. 



Length iS mm. ; width -ih mm. 



Hdh. Transvaal (Lydenburg). 



Onthophagus riLosL's, Ftlhr., 

 Plate XXXV., fig. 28. 

 Insect. Caffrar., ii., p. 294. 

 0. coslijjciiiiis, F;lhr., loc. cit., p. 294. 



Black, with a faint, dull, metallic sheen, and clothed entirely with a 

 long, greyish pubescence; genae sub-auriculate, clypeus also diagonal 

 laterally, deeply incised in the centre and with the angles of the 

 incision sharply projecting and slightly recurved; the head is closely 

 granular, densely pubescent, and there is no trace of frontal carina 

 in either sex ; prothorax ampliate laterally, scarcely convex, covered 

 with very closely set granules,, marginate in front and laterally, but 

 not along the base the median part of which is rounded; elytra 

 ampliate past the shoulder laterally, and a little attenuate from 

 past . the middle, geminato-striate, very deeply punctured, and 

 the edges of the stria) are distinctly raised, the intervals are 

 narrow and granulose, the second one is only slightly wider at 

 middle than the third; the pygidium is deeply and closely pitted 

 and pubescent, and the metasternum, which like the under side is 

 clothed with a long, greyish pubescence, has a very narrow median 

 longitudinal smooth space ; inner part of anterior tibiae non-spinose, 

 apical spur not slender, and turning slightly inward at tip in botli 

 sexes. 



Male : Vertex with a sub-cylindrical horn slightly flattened at 

 base, reclining behind in the large development, when it sometimes 

 reaches the median part of the elytra, and occasionally reduced to 

 a mere sharp tul^ercle ; prothorax impressed longitudinally from the 

 median to the basal part, but not in the anterior part. 



Female : Clypeus as in the male, vertex with a slight trace of a 

 short, transverse carina close to the basal margin. 



Length 4-|- 5i mm. ; widtli 3-3f mm. 



Hah. Natal (Malvern, Durban), Transvaal (Eustenburg, Potchef- 

 stroom), Bechuanaland. Southern Rhodesia (Salisbury). 



