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



The South African species are found on flowers. They fly with 

 great rapidity. The livery of the female differs from that of the male 

 in some species belonging to the genus Agenius. It is not known 

 if the laiwae make for themselves a cocoon. 



The characters distinguishing this Tribe are constant, provided 

 that the genus Polyplastus, which, however, has not been met with 

 as yet in the South African area, be removed from it. It is a 

 very abnormal form, having dentate maxillae, a quadrate mentum, 

 a scutellum as sharp at apex as the Cetonini, the mesothoracic 

 episterna are conspicuous, and the hind coxae project beyond the 

 elytra. The facies is, however, that of a Trichiid, the outer angles 

 of the prothorax are sharp, and the outer teeth of the fore tibiae are 

 similar to those of Stripsipher. 



Key to the Genera. 

 A 2 . Elytra convex. 



B*. Anterior tibiae of c? bi-dentate, tri-dentate in the ? . 



Clypeus emarginate ; spurs of the hind tibiae sharp in 



the <? , compressed and obtuse in the ? Stegopterus. 



A 1 . Elytra plane. 



B 2 . Anterior tibiae tri-dentate in both sexes. 



Clypeus not sinuate nor emarginate at apex ; elytra 

 nan-owing towards the posterior part Agenius. 



Clypeus sinuate or deeply emarginate ; elytra as broad f Stripsipher . 

 at apex as at the base {Brachagenius. 



B\ Anterior tibiae bi-dentate in the d Eriopeltastcs. 



Gen. STEGOPTERUS, Schaum., 

 Germ. Zeitschr., ii., 1840, p. 404. 

 Mentum as broad as long, plane, almost parallel, very hairy, 

 ligular part very deeply and broadly scooped out in front, almost 

 bi-lobate, labial palpi inserted at some distance from the apex, last 

 joint swollen, maxillae somewhat robust, fringed inwardly with dense 

 hairs, upper lobe, or mando small, set at right angles to the maxilla 

 and healing a very long pencil of hairs projecting plainly beyond 

 the clypeus if looked at from above, maxillary palpi of the usual 

 type, the last joint very little longer than the preceding one ; clypeus 

 a little Longer than the head, slightly contracted near the base, 

 emarginate or not in front ; antennal club longer in the male than 

 in the female, and as long or much longer than the pedicel ; pro- 

 thorax slightly broader than long, more attenuate laterally in the 



