1900.] Catalogue of the Coleoptera of South Africa. 455 



Clypeus sliai-plv acuminate at tip ; elytra a little 



ampliatc past the middle, tufts of hairs hrownish . . nanniscus. 



Clypeus somewhat blunt at tip; elytra ampliate 

 past the middle, walls of median furrow not inter- 



i. J .... horridjis. 

 rupted 



Walls of median furrow interrupted aculeatus. 



c'. Anterior tibiffi without basal tooth or serration. 



Clypeus sharply acuminate; elytra narrowed late- 

 rally in front and distinctly ampliato-ovate from 

 before the median part : • • • nasutus. 



C. Intermediate and posterior tibiae serrate, quadrangular 



(Trox). 



a\ Elytra with ten series of tubercles or carnia;, 



the alternate ones of which are more raised than the 



others. 



Elytra costulate, interstices with a single row of 



fovete ; costse with a few small fascicles of hairs . . penicillatus. 



Elytra with nearly equal series of closely set, not 

 much raised tubercles, interstices with two raised 

 lines interrupted by transverse impressions ; anterior 

 tibiffi with a very strong serration luruliis. 



Elytra with alternate series of tubercles not closely 

 set, and much more raised than the others ; anterior 

 tibiffi not strongly serrate sulcatus. 



A\ Mesosternum and metasternum not projecting between the 

 intermediate coxae. 

 B^ Scutellum narrowed at base, shaped like a lance-head. 

 C. Intermediate and posterior tibiae distinctly serrate, 

 quadrangular {Omor^us). 

 D'. Head with two sub-contig-uous tubercles. 



a^ Prothorax with a longitudinal carina in the median 

 part of the base ; elytra elongate. 



64. Elytra with the tubercles very elongate, and the 

 rows of nearly the same height, third and fourth 

 more costate than the others. 



iinctdtus. 

 Head with two median tubercles '(melancholicus. 



Head with two median tubercles and a distinct 



longitudinal ridge above them consangmneus. 



a\ Prothorax without a longitudinal carina in the 



median part of the base. 

 63. Elytra with the alternate rows formed by round 



tubercles. 



