186 Transactions Soutli African Philosophical Society, [vol. xii. 



which is punctured all over, has in tlie anterior part, which is briefly 

 dechvous, a median, sub-laminate ridge, extending to about one-third 

 of the width. 



Length 7-9 mm. ; width 4^-6 mm. 



Hah. Southern Ehodesia (Salisl)ury). 



Onthophagus loeicatus, Klug, 

 Plate XXX v., fig. 18. 

 Monatsb. Berl. Acad., 1855, p. 653. 

 0. coUaris, Fahr., Bohem., Ins. Caffr., ii., p. 268. 



Head and prothorax metallic green, shining, the latter with a 

 broad anterior and lateral flavescent band suffused with green ; 

 elytra light chesnut-brown with a greenish tinge, suture green, 

 under side coppery green or flavescent ; antennae flavous ; head 

 finely granulose and covered wdth dense, flavescent hairs ; prothorax 

 convex, marginate all round, basal part depressed, smooth, broadly 

 but not sharply aculeate ; elytra ampliated laterally from the outer 

 angle to a short distance from the middle, and gradually attenuate 

 from there, moderately deeply geminato-striate, and with the 

 intervals plane and filled with very closely set, deep, setigerous 

 punctures ; second interval broader than the third to past the middle ; 

 pygidium very closely punctured, and very densely pubescent; 

 median part of metasternum punctulate only in the anterior part. 



Male : Gente straight, clypeus semicircular ; frontal carina hardly 

 discernible ; median part of the vertex produced into a sub-cylin- 

 drical long curved horn, flattened towards the tip and bifid there ; 

 the prothorax is convex with the sides sub-diagonal, and not very 

 declivous at apex, in the anterior part there is a shallow median 

 sulcus, with a blunt, small tubercle on each side of it at the top, 

 this groove is not always distinct, but it is generally filled with a 

 denser flavescent pubescence ; the inner part of the anterior tibiae is 

 very distinctly spinose. 



Female : I have not seen the female, but Klug says that it has a 

 cephalic horn pointed at the tip instead of being bifid ; and accord- 

 ing to Fahroeus the cephalic horn is short, attenuate, and straight, 

 the frontal carina is sub-arcuate and distinct ; the prothorax is 

 moderately convex, and the dorsal tubercles are nearer to the 

 anterior margin and more distinct. 



Length 12-12^ mm. 



Hah. Natal (Pietermaritzburg). 



Occurs also in German East Africa (Lake Jippe). 



