374 Transactions South African Pldlosophical Society, [vol. xii. 



Several of the species occurring in South Africa have also a very 

 w^ide range. This adds to the difficulty of identification, A revision 

 of the African species w^ould probably have as a result a great 

 reduction in the number of species recorded from this part of the 

 world. 



The genital armature of the males is very similar in all the 

 species (pi. xxxviii., fig. 34), and it has not afforded me much 

 help for the determination. 



Key to the Species. 



A-». Prothorax broader than the elytra ; scutellum very long, 



sharply acuminate ; pygidium. vertical Colobopteeus 



Head faintly tuberculate, clypeus slightly eniarginate ; elytra 



with costate very deeply punctured intervals viarginicollis. 



A3. Prothorax not broader than the elytra ; body oblong, little 

 convex, intervals smooth or convex, but not sharply carinate ; 

 scutellum nioderately long and acuminate Aphodius. 



B-t. Anterior tibise not serrate above the outer teeth. 

 C=. Head without tubercle. 

 D-. Clypeus not emarginate. 



a3. Intervals of elytra plane, glabrous. 



Colour flavous, clypeus slightly sinuate in front ; 

 head with a median black patch ; prothorax with 

 four discoidal black patches ; elytra with a j)ost- 

 median bi-sinuate broad black band and two apical 

 spots walilhergi. 



Head and prothorax with similar black patches ; 



elytra black on the whole of the posterior part . . holubi. 



Colour fuscous lirown, and lighter brown laterally ; 

 gente rounded, head without carina or impressed 

 line ; prothorax moderately deeply excavate in front emeritus. 



Colour entirely fuscous brown ; gense sharply angular 

 at base and projecting much beyond the eye ; pro- 

 thorax not excavate in front valens. 



Colour light bronze with a greenish blue iridescence 

 covering the head and prothorax and forming two 

 transverse bands on the elytra ; head and prothorax 

 simple iriclcscens. 



Colour fuscous brown, a little lighter on the elytra 

 and having there a faint longitudinal, testaceous 

 band running on the second interval, and extending 

 transversely in the posterior part where it is bi- 

 sinuate ; head simple ; prothorax densely aciculate 

 laterally and nearly smooth in the centre comiexus. 



