250 Transactions South African Philosophical Societij. [vol. xii. 



prothorax closely granular except along the base and in the median 

 basal part, and having in the anterior part a narrow median impres- 

 sion with a short, laminate, triangular tubercle in front of it ; humeral 

 tubercle of elytra more or less distinct ; anterior tibiae without a 

 spinose angle, apical spur compressed, and suddenly incurved at 

 tip. 



Length 10-13 mm. ; width 7-9 mm. 



Hab. Southern Ehodesia (Middle Limpopo, Buluwayo, Enkel- 

 doorn, Salisbury, Victoria Falls). 



0. bradsiiawi, Paring., is only the small development. 



Onthophagus kakus, Guer. Menev., 



Plate XXXV., figs. 10, 10a; Plate XXXVIII. , fig. 22. 



Iconogr. Eegne. Anim. Ins., p. 77, pi. xxi., fig. 6. 



Metallic green, not shining, cephalic horns black ; clypeus closely 

 granose, gense nearly straight and rounded at tip, frontal carina 

 slightly arcuate ; prothorax ampliate laterally past the median part, 

 nearly straight from a short distance from the median part and 

 having the basal angle very long and sharply spinose, it is nearly 

 plane except in the anterior part, and slightly dehiscent in front, 

 marginate laterally and in front, but not along the base which is 

 depressed, sharply aculeate in the median part which is depressed 

 and has a transverse carinule above the apex of the aculeate part, it 

 is evenly and closely granose, and has a slightly impressed median 

 longitudinal line in the posterior part ; elytra plane, moderatel}' 

 attenuate laterally from the shoulder to the posterior part, finely 

 striate, the strise being narrowly geminate and punctulate at long- 

 intervals, instertices plane, covered with very closely set, minute, 

 very briefly setigerous granules, second interval much broader than 

 the third and having a rudimentary stria in the anterior part, fourth 

 interval only a little broader than the third at middle, humeral 

 callus very distinct, but not tuberculate ; pygidium finely scabrose ; 

 metasternum scabrose and having in the middle a very narrow, 

 smooth longitudinal band grooved slightly at the base ; inner side of 

 apical part of anterior tibiae not spinose. 



Male : Anterior part of clypeus straight, vertex of the head 

 produced into a high transverse carina having in the middle two 

 slightly recumbent horns reaching as high as the apex of the 

 prothorax, and emitting on each side of the outer part of the base of 

 the median horns a long, thin, fiat recumbent horn, thickening 

 moderately l^efore the sharp tip and reaching to beyond the 



