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



the other species of the genus ; pygidium with a greyish-white 

 coating leaving a median longitudinal black band beginning at 

 a short distance from the base, but reaching the apex, and having 

 in addition a moderately dense, long yellowish-white pubescence 

 similar to the one clothing the under side ; the tarsi of the inter- 

 mediate tibiae, which are not curved, are shorter than the tibia?, but 

 those of the hind legs are much longer. 



The facies is slightly different from that of the other three species 

 of Stegopterus, in which the whitish pygidial macules are also 

 absent, owing to the somewhat more plane and shorter elytra. The 

 antennal club of the $ is still more developed than that of S. septus, 

 and in many respects this species agrees with Burmeister's descrip- 

 tion of Eriopeltastes leucoprymnus, but the buccal organs are those 

 of Stegopterus, the maxilla and mando not being unusually slender, 

 and the hind tarsi are also of a normal length. 



Length 10 mm. ; width 6 mm. 



Hab. Natal (Bstcourt). 



Gen. AGENIUS, Serville, 

 Encycl. Meth., x., 1825, p. 702. 



Men turn plane, sub-ovate laterally for a little more than two- 

 thirds of the length, notched laterally at the ligular part which 

 is twice as long as broad, deeply incised in the centre, with the two 

 apical parts rounded, labial palpi inserted near the apex of the outer 

 face, last joint ovoid, truncate at the tip ; lower maxillary lobe 

 moderately robust, densely ciliate inwardly, upper lobe or mando 

 corneous, thickly hairy at tip, the penicillate hairs plainly projecting 

 beyond the clypeus, last joint of maxillary palps sub-fusiform out- 

 wardly, blunt at apex ; clypeus longer than the head or not, not 

 incised in front ; antennal club either longer than the six preceding 

 joints of the pedicel ( $ ) or of equal length ( $ ) ; prothorax plane, 

 sub-hexagonal ; scutellum sub-ogival ; elytra plane, elongate, 

 either tapering slightly laterally from the base to the apex 

 or as broad there as at the base (rufipennis) ; pygidium sub- 

 vertical in the male, sub-horizontal in the female ; legs long, 

 especially the tarsi, very slender ; anterior tibiae tri-dentate out- 

 wardly in both sexes ; spurs of hind tibiae sharp in both sexes. 



Five species included in this genus are now known ; four of them 

 seem restricted to the south-western parts of the Cape Colony, and 

 one is recorded from the Transvaal ; in two species the colouration 

 of the female differs much from that of the male. 



