1902.] Catalocjuc of the Coleoptera of South Africa. 797 



between the two costules, which are veiy distinct, and the punctm-es 

 bear each a minute sub-flavescent scale ; the pygidium and also the 

 propygidium have small, ovate, flavescent scales either partly rubbed 

 off or very scattered ; in the male the trochanters project as a small 

 but distinct spine, the robust hind tibige have a short, sharp spine in 

 the inner part of the knee, the hind tibiae are emarginate near the 

 knee, compressed and gradually dilated underneath into a laminate 

 sub-elongato-quadrate process, the lower edge of which is quadri- 

 dentate, the fourth tooth forming a sort of apical mucro, the basal 

 part of the tibia is grooved underneath, and there is no apical spur ; 

 the joints of the hind tarsi are conical, somewhat short, but not 

 closely set, the fourth joint is simple underneath, and the hind claw 

 is double, the shorter one being alone cleft. 



Length 5i-7 mm. ; width 3^3|- mm. 



Hah. Transvaal (Johannesburg). 



BIZANUS, n. gen. 



Mentum long, very narrow but slightly expanding at the apex 

 where it is somewhat rounded and sub-penicillate ; lobe of maxillae 

 short, narrow, simple, but having at the tip a pencil of hairs longer 

 than the whole maxilla ; apical joint of labial palpi more than tw4ce 

 as long as the other two taken together, that of the maxillary also 

 long, straight inwardly but fusiform outwardly ; antennae normal ; 

 clypeus narrower than the head, nearly parabolic and with the apical 

 margin reflexed ; prothorax, scutellum, elytra and pygidium as in 

 Heterochelus ; in the male, however, the claw of the intermediate 

 legs has alongside of it another one equally robust but shorter, and 

 pointing downwards as in some species of Dicranocnemus, Monochelus, 

 etc., but instead of being a part of the claw it projects laterally from 

 the base itself ; the female has also this claw, but it is somewhat 

 rudimentary ; in the male the hind legs are very robust. 



This genus differs from Heterochelus by the rounded shape of the 

 clypeus, and the absence of teeth on the maxillary lobe ; from 

 Diaj^lochelus, in which the clypeus is nearly similar, it differs by 

 the absence of teeth on the maxillary lobe, and also in the general 

 facies, which is that of an Hetcrochehis. 



BiZANUS CALIGINOSUS, Xl. SpeC. 



Male : Black, with the fore legs rufescent, the elytra are chocolate- 

 brown and covered with nearly contiguous ashy-grey scales, the 

 propygidium and abdomen have deep yellow scales, but the pygidium 

 has none ; the head is very rugose, the clypeus is very much rounded 



