218 Transactions Soiitli African PJiiloso2)liical Society, [vol. xii. 



not excavated ; inner part of anterior tibiae non-spinose at tip. In the 

 smaller development the cephalic horns are replaced by a sharply 

 tri-dentate basal ridge. 



Female : Frontal carina arcuate and reaching on each side to the 

 junction of the genaB with the clypeus, which junction is, however, 

 nearly obliterated, close to this frontal carina there is another one 

 reaching from eye to eye, not quite as arcuate as in the male, 

 and the cephalic horns are replaced by a short, basal, sub-triangular 

 ridge. 



Length 9J-10 mm. ; wddth 5J-5J mm. 



Hab. Cape Colony (Burghersdorp), Natal (Durban), Transvaal 

 (Potchef stroom) . 



It is said to occur also in Abyssinia and the Galla country. 



Onthophagus bubalus, Har., 



Plate XXXV., fig. 33. 

 Coleopt., Heft, ii., 1867, p. 49. 



Bronze green, moderately shining, elytra pale testaceous mottled 

 with fuscous bronze, under side fuscous, glabrous on the upper side ; 

 head closely and roughly punctured in the anterior part, scabrose in 

 the frontal part, genae rounded, sub-auriculate, clypeus elongate, 

 blunt at tip where it is slightly emarginate, edge recurved, a frontal 

 arcuate carina very distinct ; antennae fuscous ; prothorax ampliate 

 laterally, moderately convex except in the anterior part, which is 

 declivous, marginate all round, base rounded, covered with slightly 

 scattered elongate granules in the anterior part only, the posterior 

 being impunctate, the base has often a narrow fiavescent edge, and 

 there is a faint longitudinal sulcus in the posterior part ; elytra 

 elongate, very little ampliato-ovate, narrowly but deeply striate, the 

 striae are geminate and faintly punctulate, the intervals are raised, 

 sub-tectiform, impunctate and glabrous, the second interval is 

 slightly wider than the third, and the humeral callus is distinct ; 

 pygidium aciculate, glabrous ; metasternum hardly punctate in the 

 centre, and without any longitudinal impressed line ; apical spur 

 nearly straight in both sexes ; inner part of anterior tibiae produced 

 in a long very conspicuous spine in the male. 



Male : Vertex produced on each side into a sub-compressed horn 

 curving inward and united at base by a non-dentate ridge ; pro- 

 thorax deeply impressed on each side of the anterior part for the 

 reception of the cephalic horns, and with the central part abruptly 

 declivous and divided into two by a shallow median sulcus uniting 

 behind with the posterior one. 



