244 Transactions South African Pliilosoplucal Socici!/. [vol. xii. 



acuminate and reflexed at tip, closely punctulate, slightly plicate 

 on the clypeus, and having a transverse frontal carina which is 

 obliterated in the greatly developed male, and a basal one straight in 

 the middle and a little curved on the sides ; prothorax marginate in 

 front and laterally, not much ampliate on the outer sides ; covered 

 with very shallow, small punctures set somewhat close to each other, 

 the centre of the basal part is slightly acuminate, and there is a faint 

 median longitudinal impressed line in the posterior part of the disk : 

 elytra very little ampliate, very finely punctato-striate, striae non- 

 geminate, intervals plane and having several irregular rows of 

 shallow punctures which are very briefly setigerous, second interval 

 wider than the third, humeral tubercle distinct ; pygidium feebly 

 punctulate ; metasternum carinate but not acute at tip, median part 

 smooth but punctulate laterally in front ; anterior tibial non-spinose 

 inwardly at tip, apical spur slender and nearly straight in both 

 sexes. 



Male : Prothorax with a sub-lateral deep impression flanking a 

 median vertical lobe transversely carinate at tip and slightly emargi- 

 nate in the centre, the impressions are smooth, but the dorsal part 

 of the lobe is somewhat rugose, there is no trace of a frontal carina 

 on the clypeus in the large development, but it is still visible in the 

 minor and intermediate ones. 



Female : Clypeus less elongate and more semicircular, frontal 

 carina very distinct, carina on the vertex more sinuate in the centre ; 

 prothorax only "a little retuse and having in the anterior part an 

 arcuate median ridge. 



Length 11-12 mm. ; width 6^-7 mm. 



Hab. Cape Colony (Worcester, East London, Grahamstowii, 

 Uitenhage), Natal (Durban, Estcourt). 



Onthophagus cakbonakius, Klug, 

 Monatsb. Berl. Ac, 1855, p. 653 ; Peter's Eeis., 1862, p. 233. 



Male : Black, with a very faint metallic tinge, moderately shining,. 

 hardly pubescent ; antenna) sub-flavescent ; head deeply and closely 

 punctured, rugose on the clypeus which is sub-semicircular, emargi- 

 nate in front in the male, gena? sub-angular, frontal carina a little 

 arcuate, much raised, and continued diagonally on the vertex above 

 the eyes, and there is a very short, sub-triangular tuberculiform basal 

 tooth ; prothorax ampliate laterally, moderately convex, marginate 

 all romid and covered with deep, closely set, round punctures ; it is 

 sub-diagonally retuse in the anterior part, faintly impressed laterally, 



I 



