60 Transactions South African Philosophical Society, [vol. xiii. 



Body shining, median part of prothorax sub-strigillate, 



striae of elytra obliterated on the sides emeritus. 



Body sub-opaque, median part of prothorax not strigil- 



late, striae of elytra distinctly striate on the sides. . . . laetulus. 



b 1 . Frontal suture keeled fahraei. 



a 1 . Clypeus constricted laterally, tri-dentate in front. 



b 2 . Frontal suture keeled. 



Body very convex, ampliato-ovate ; elytra not distinctly 



striate tardus. 



b 1 . Frontal suture grooved. 



Body elongato-ovate ; elytra distinctly striate . . . . pauper. 



A 1 . Antennae 9-jointed. 



B 2 . Hind ocular keel meeting the edge of the genal canthus. 



a 2 . Body sub-parallel, not very convex. 



Body short, massive. 



Antennae rufescent, outer joint of club moderately 



grooved in the male cognatus. 



Antennal pedicel flavous, club black, with outer joint 

 conspicuously grooved in the male obtusus. 



a 1 . Body elongated. 



b 2 . Anterior tibiae tri-dentate. 



c 2 . Body not iridescent. 



Antennae rufescent ; body not iridescent, bronze with- 

 out much sheen namaquanus. 



Antennae flavous ; body entirely testaceous-red . . . . testaceus. 



Antennas flavous ; elytra testaceous with the suture 

 and the outer margins fuscous or uniformly dark 

 chestnut fiavipennis. 



c 1 . Body iridescent. 



Antennae rufescent, club fuscous ; elytra infuscate 



laterally and behind qucesitus. 



b 1 . Anterior tibiae bi-dentate. 



Body testaceous ; elytra with an outer marginal infus- 

 cate band tenellus. 



B 1 . Hind ocular keel not meeting the edge of the genal canthus. 



ft 2 . Body elongated. 



Antennae flavous decedens. 



