1908.] Catalogue of the Coleoptera of South Africa. 573 



elongated in the centre, plainly incised with the angles of the 

 incision triangular, but little reflexed, at the junction of the clypeus 

 with the frons is a short, sub-arcuate ridge, and exactly between the 

 eyes a transverse, more highly raised carina not reaching quite to 

 the genae, and a very faint one on the margin of the vertex, the 

 clypeal part is roughly and closely punctate, the punctures are 

 simpler in front of the frontal carina, and rounder and sparser 

 at the back of it ; prothorax simple, glabrous, except for a few setae 

 on the sides, covered with simple, round, equi-distant punctures 

 separated by an interval equal to their diameter, base very obsoletely 

 marginate, posterior sides sinuate, disk not impressed longitudinally 

 behind ; elytra very narrowly striate with the intervals plane, except 

 the second one which is somewhat convex towards the base, and 

 bearing each two rows of simple, briefly setigerous punctures ; 

 pygidium with somewhat deep but also somewhat remote briefly 

 setigerous punctures. 



Allied to 0. simoni, 0. importunus, and 0. cequepubens, but differs 

 from each in the punctuation of the prothorax, which is simple, 

 equi-distant, and more broadly separated than in any of the three 

 species mentioned ; the punctuation of the elytra is also less rugose. 



Length 3f- 4 mm. ; width 3 mm. 



Hab. Transvaal (Waterberg District) ; Plat River, April 5, 1905; 

 Mozambique (Lourenco-Marquez). 



Onthophagus ^ruginosus, Roth, 

 Wiegm. Arch. f. Naturg., xvii., 1851, p. 124. 

 0. chalcostomus , Fahr., Catal. i., p. 221. 

 0. tenuicomis , Klug, Cat. i., p. 221. 



This species ranges eastward from Abyssinia to the Cape Colony. 



Onthophagus dedecor, Wallengr., Cat. i., p. 264. 



0. nigrescens, d'Orbigny, Ann. Soc. Ent. France, lxxi., 1902, p. 21. 



Somewhat shiny, sub-greenish black, head and anterior part of 

 prothorax greenish, briefly fulvous pubescent above, pygidium with 

 long, silvery, setose hairs. Head closely rugose, moderately thickly 

 punctate in the centre in the male; clypeus sub-rotund or hardly 

 sinuate ; frontal part not carinate in the male and armed with two 

 slender horns on the vertex, in the female the frontal part is briefly 

 and sub-arcuately carinate, and the vertex provided with a laminiform 

 ridge set between the hind margins of the eyes and produced on each 

 side in a small horn. Prothorax simple, strongly and very densely 

 rugose punctate, sulcate longitudinally in the centre of the posterior 



