192 Transactions South African Philosophical Society, [vol. xii. 



brown. The shape of the cephalic horn is simihar to that of 

 0. monodon, but apart from the presence of the small longitudinal 

 carina of the anterior part of the prothorax, it is easily distinguished 

 not only by the size, which is very much smaller, but also by the 

 rough punctures on the thorax and elytra. 



Hah. Cape Colony (Graham's Town), Natal (Durban). 



Onthophagus pugionatus, Fahr., 



Plate XXXV., fig. 21. 



Insect. Caffr., ii., 1857, p. 286. 



Bronze or aeneous on the head and prothorax, elytra black, or 

 dark blue, with the base spotted with testaceous muculae, w^hich are 

 often absent, briefly pubescent on the upper side, under side 

 piceous red bronze ; clypeus sub-plicate, frontal part almost im- 

 punctate, gense scabrose ; prothorax moderately convex, marginate 

 all round, median part of the base rounded, ampliated laterally at 

 middle and covered with closely set scabrose punctures or small 

 granules denser and sharper on the sides, posterior dorsal part with 

 a distinct impressed longitudinal line ; elytra ampliato-ovate, not 

 deeply geminato-striate, intervals plane and covered with closely set 

 scabrose setigerous punctures ; pygidium deeply and closely pitted ; 

 metasternum vaguely pitted, median longitudinal impressed line 

 distinct; inner part of anterior tibiae non-spinose, at apex; apical 

 spur long, nearly straight in both sexes. 



Male : Genae rounded, clypeus semicircular, slightly blunt but not 

 emarginate at middle, no frontal carina, in the centre of the vertex 

 a long, upright, or very slightly bent horn, compressed and triangular 

 in the basal half, cylindrical and sharp at tip in the other half; pro- 

 thorax sharply declivous at tip and with the median part of the 

 anterior part impressed, smooth, and slightly canaliculate longi- 

 tudinally at middle from the tip of the declivity, but not as strongly 

 impressed as in the fig. given (fig. 21) ; the median part of the dorsal 

 part is more punctate than granular. 



Female : Clypeus very diagonal laterally, sub-aculeate and truncate 

 at tip, frontal carina distinct, and arcuate, vertex, with a sub-basal 

 transverse high carina either tri- dentate or with the median part 

 sub-triangular ; prothorax with two small sub-triangular tubercles 

 coalescing so as to form a short transverse ridge in the middle of 

 the anterior part, surface of the prothorax more distinctly granular 

 than in the male. 



Length 8-8J mm. ; width 5-5J mm. 



