190 Transactions South African Fhilosopliical Society, [vol. xii. 



laminate horn tapeiing to a point and curving forward ; the pro- 

 thorax is amphated hxterally towards the middle, marginate all 

 round, and with the median part of the base rounded, it is convex, 

 covered with closely set granules except along the median part of 

 the base where the granules are replaced by scabrose punctures, is 

 declivous somewhat abruptly in the anterior part, and slightly 

 impressed longitudinally, while the median dorsal part is distinctly 

 impressed lengthways from near the apex of the anterior declivity to 

 the median part of the base ; elytra ampliato-ovate, deeply but 

 narrowly geminato-striate, intervals convex and having on each side 

 a series of deep punctures, humeral callus distinct, second interval 

 slightly broader than the third in the basal part only ; pygidium 

 clothed with very dense silky white hairs ; median part of meta- 

 sternum entirely covered with deep punctures, and having no trace of 

 a longitudinal impressed line ; inner part of anterior tibicfi non- 

 spinose at apex, apical spur curving a little downward but nearly 

 straight ; antennae flavous. 



Female unknown. 



Length 7 mm. ; width 4^ mm. 



Hab. Cape Colony (Griqualand West). 



This species is very closely allied to 0. leucojnjgits, and may prove 

 to be a varietal form of it, distinguished, however, by the cephalic horn 

 bent forward instead of being strongly curved backward. 



Onthophagus monodon, Fahr., 

 Insect. Catfrar., ii., p. 290. 



Male : Very dark greenish blue on the upper side, nearly black 

 underneath ; genae distinctly rounded, clypeus semicircular laterally, 

 and broadly and distinctly emarginate at tip, head covered with deep 

 scattered punctures ; there is no frontal carina, but in the middle of 

 the vertex there is a long, sub-cylindrical horn, slightly curved for 

 two-thirds of the length, and with the curve more pronounced in the 

 apical third ; prothorax not very convex, moderately declivous in 

 the anterior part, not impressed in the centre of the anterior part, 

 but having there a faint, longitudinal, smooth depression, while the 

 surface is covered wdth fairly closely set, deep punctures, and is 

 pubescent, especially on the sides, it is marginate laterally but not 

 along the base w^hich is rounded in the centre, and it has a narrow 

 impressed longitudinal line in the posterior part; elytra a little 

 ampliate laterally before the median part, geminato-striate, the striae 

 punctate, and the intervals sparsely setulose and having each a 



