1900.] Catalogue of the Colcoptera of South Africa. 307 



and a little convex ; metasternum plane in the centre, but sub-aculeate 

 towards the apex where it is deeply impressed transversely, and 

 separated from the mesosternum by a transverse impressed line ; 

 legs short and massive ; anterior tibiae very strongly and broadly 

 quadri- dentate, truncate at tip, sharply carinate in the middle ; 

 apical spur moderately long and slender, and curving a little out- 

 wardly ; intermediate and posterior much compressed, but broadly 

 ampliate at tip, very faintly grooved longitudinally on the upper side 

 and slightly denticulate ; intermediate and posterior tarsi short, 

 the joints are fused, and vary in number from two to five ; there 

 is no trace of claws. 



This genus is evidently allied to Dendropcemon and Onthocharis, 

 both American genera. It is also related to Stiptopodius from 

 Abyssinia and Somaliland. 



Key to tlie Species. 

 Intermediate tibiae tri-jointed, posterior ones bi-jointed . . . . optatus. 

 Intermediate tibise five-jointed, posterior ones four-jointed . . . . singularis. 



Sapececius singularis. 



Coppery on the head and prothorax, or sometimes dark bronze 

 and with the elytra very dark blue, or nearly black, under side and 

 legs dark bronze ; head closely punctate, and with a faint trace of 

 transverse folds on the clypeus, genae sharply triangular at base, but 

 in a line with the clypeus which is arcuate, incised in front, and has 

 on each side of the incision a distinct, nearly horizontal tooth, there 

 is a frontal arcuate carina uniting the two gense, and a sub-basal 

 one more transverse than the first and more raised ; prothorax plane 

 but a little dehiscent in front, marginate all round, and covered with 

 deep, closely set punctures in the dorsal part, and deeper and more 

 rugose, almost scrobiculate ones on the sides ; elytra nearly parallel, 

 narrowly but deeply geminato-striate, and with the intervals raised, 

 sub-tectiform on the dorsal part, and sparingly punctulate, the 

 punctures on the sides and posterior part being very briefly setulose ; 

 pygidium closely and finely pitted ; metasternum punctulate, and 

 very faintly impressed longitudinally at middle, sides of pectus 

 slightly pubescent. Intermediate tibiae with five joints, the ultimate 

 one, however, is hardly discernible, posterior ones four-jointed, but 

 the joints are not free, and the apical one is obliquely truncate at 

 tip. 



