1908.] Catalogue of the Goleoptera of South Africa. 617 



the posterior angles, and the base is folded. Intervals of elytra 

 with moderately closely set granules. 



Length 2 J mm. 



Hab. Damaraland (Okahandja). 



H. d'Orb. 



Onthophagus inermicollis, n. sp. 



Brownish red, very dark on the head and prothorax, somewhat 

 light on the rest of the body; upper side with a uniformly very 

 sliort pubescence. Epistoma rounded, frontal part with a strong, 

 arcuate carina, vertex with a strong and long carina of uniform 

 height shaped as a broad, reversed bow in its median part, straight 

 or a little curved backwards at the end, and situated a little in front 

 of the posterior edge of the eyes. Prothorax entirely covered with 

 close granules, except in the centre of the basilary part, which is but 

 little densely granular ; the anterior part without any traces of pro- 

 jection or of depression ; sides strongly sinuate near the posterior 

 angles, base with a fold. 



Length 7-J-8 mm. 



Hab. Southern Ehodesia (Salisbury). 



H. d'Orb. 



Onthophagus acutus, n. spec. 



Extremely closely allied to 0. bituberculatus, Oliv. ; differs from it 

 merely through the punctuation of the prothorax which consists of 

 uniformly granulose, closely set punctures (instead of ocellated 

 punctures mixed with remote granulose ones), the pygidium set 

 with fine remote granules (instead of moderately large ocellated, 

 closely set, and very superficial punctures), and the still shorter 

 pubescence. It is also very closely allied to 0. depressus, Har. ; it 

 differs from it by the partly testaceous elytra ; the punctuation of 

 the prothorax, which consists of equal punctures; the pygidium, 

 which is granulated (instead of being covered with unequal ocellated 

 punctures) ; the prothorax of the $ has on the disk two gibbose 

 projections separated by a depression ; the size is also larger. 



Length 7—9^ mm. 



Hab. Damaraland (Salem, Okahandja), Lake N'Gami ; Caffraria; 

 Tanganyika ; Nyassaland. 



H. d'Orb. 



It is this species which Boheman noticed from Damaraland (Ofv. 

 Vet. Ak. Forh., 1860, p. 112) under Olivier's name. I took my Natal 

 examples to be identical with 0. laceratus, Gerst., whereas they are 

 pronounced to be 0. depressus, Har. I feel absolutely certain that 

 passages bridging over the extremely small differential characters of 



