212 Transactions South African P]iiloso2)]iical Society, [vol. xii. 



of anterior tibiae non-spinose, apical spur nearly straight in both 

 sexes. 



Male : No frontal carina in the large development, vertex with 

 two moderately long, upright cylindrical horns not connected at base 

 by a transverse carina ; prothorax abruptly declivous in the anterior 

 part, deeply impressed there, and with the top of the declivity 

 carinate and forming a sub- semicircular ridge; in the small develop- 

 ment the cylindrical horns are reduced to two conical tubercles 

 similar to those of the female, from which it can hardly be 

 distinguished. 



Female : Head with a second arcuate frontal carina very distinct, 

 set close to the first, in the vertex two moderately long, conical 

 horns united at base by a transverse carina ; prothorax similar to that 

 of the male. 



Length 6-8 mm. ; width 4-5 mm. 



Hab. Transvaal (no exact locality), Ovampoland. 



Onthophagus aubiculatus, Klug, 

 Monatsb. Berl, Ac, 1855, p. 652 ; Peters' Eeis., 1862, p. 229. 



Head and prothorax dark, fuscous green, very briefly pubescent ; 

 antennae flavescent ; head roughly punctured on the clypeus and 

 closely punctured on the vertex, gense rounded, sub-auriculate, a 

 frontal carina uniting the two gense, which however disappears in 

 the larger development, and close to it another more distinctly 

 raised, clypeus long, very diagonal laterally, deeply and broadly 

 incised at tip and with the angles of the incision long, sharp, and 

 recurved ; prothorax ampliate but hardly rounded laterally at middle,, 

 and densely covered with broad, deep, closely set punctures and 

 minute ones between the others, the base is rounded, it is mar- 

 ginate all round, and there is no impressed longitudinal line or 

 sulcus in the dorsal part ; elytra ampliato-ovate, distinctly geminato- 

 striate, strias closely punctate, intervals plane and filled with rugulose 

 punctures similar to those on the prothorax, but rougher, shallower, 

 less regular, and slightly scabrose ; second interval not wider than 

 the third, humeral callus distinct ; pygidium deeply and irregularly 

 pitted, nearly glabrous ; metasternum sub-aculeate at tip, distinctly 

 grooved longitudinally in the middle. 



Male : I know only the small development in which the first 

 frontal carina is distinct, the second one a little more raised, and 

 there is no transverse carinate lamina near the base ; the prothorax 

 is rounded in the anterior part and not retuse ; in the figure given 



