1900.] Catalogue of the Coleoptera of South Africa. 219 



Female : In the female the cephalic horns are replaced by a 

 transverse pre-basal high carina similar to that of the small develop- 

 ment of the male ; the anterior part of the prothorax is less raised, 

 and the impressions are only faintly indicated. The only distinction 

 between this sex and the minor male development is to be found in 

 the absence of the inner apical spine of the anterior tibiae. 



Length 9J~12 mm. ; width 5^-7 mm. 



Hah. Cape Colony (Graham's Town, Uitenhage, Bm^ghersdorp), 

 Natal (Durban, Frere, Newcastle, Estcourt), Transvaal (Potchef- 

 stroom). 



Onthophagus ukus, Harold, 



Plate XXXV., fig. 34. 

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



Black, opaque, very briefly pubescent ; head roughly punctured, 

 slightly plicate transversely on the clypeus which is elongate, not 

 much rounded, laterally obtuse and widely emarginate in front with 

 the apical margin much recurved in the male, but less deeply 

 emarginate and with the margin also less recurved in the female, 

 there is a frontal carina ; joints of antennae piceous, club fuscous ; 

 prothorax moderately convex, marginate all round, base rounded 

 but slightly aculeate at middle, covered with not closely set small 

 very briefly setigerous granules, and having a longitudinal very 

 shallow furrow in the median part ; elytra ampliato-ovate, narrowly 

 geminato-striate, the striae closely punctured and shining, intervals 

 nearly plane and having each two series of minute not very closely 

 set slightly shining tubercles, second interval not wider than the 

 third, humeral tubercle distinct ; pygidium deeply and closely pitted ; 

 metasternum somewhat closely pitted and having a very distinct, 

 median longitudinal impressed line ; apical spur of anterior tibiae 

 nearly straight, mner part of anterior tibiae with a long spine in the 

 male. 



Male : Frontal carina very slight in the large development, vertex 

 produced into two nearly upright cylindrical horns curving slightly 

 inwards, obtuse and a little knobby at tip and reaching nearly as high 

 as the top of the anterior part of the prothorax which is declivous, 

 deeply impressed on each side and with the more vertical median 

 part obsoletely bi-tuberculate ; in the smaller development the 

 frontal carina is much more raised, and the basal laminate carina is 

 either truncate on each si'de as in the female, or slightly dentate. 



Female : Frontal carina very distinct, vertex with a pre-basal 



