1902.] Catalogue of the Coleoptcra of South Africa. 709 



anterior and intermediate legs are double and each one equally 

 deeply cleft." 



Gen. HETEEOCHELUS, Burm., 

 Handb. d. Entomol., iv., 1, p. 87. 

 Ischnochehis, Burm., loc. cit., p. 129. 

 Mentum and palpi as in Dichelus ; lobe of maxillae strongly dentate 

 inwardly and having at the tip a small pencil of hairs which is often 

 wanting, or is quite rudimentary, the number of teeth varies from 

 seven to five, if the lobe is concave the teeth are strong, set opposite 

 each other {D. sulphureus, elegans, &c.), if the lobe is not concave the 

 number of teeth is reduced to five, set in a line {coccincus, dissidens, 

 &c.), but in a few cases the lobe, although not concave, has seven ; the 

 clypeus, which is slightly attenuate laterally, assumes three shapes : 

 it is straight transversely at apex with the margin reflexed, and is 

 more or less plainly quadri-dentate, and slightly angular laterally at 

 the base (except in H. egenics), or more distinctly narrowed laterally 

 and tri-dentate, in which case the lateral basal angle is more dis- 

 tinctly toothed, or again bi-dentate, but then the lateral angle has 

 become as conspicuous a tooth as the median one, which, however, 

 projects much more {H. dissidens, vittiger, controversus) ; the pro- 

 thorax is similar to that of Dichelus, and not always grooved 

 longitudinally in the posterior half, it is, like the head, very scabrose 

 or scabroso-punctate, and never glabrous; the scutellum is of moderate 

 size, sub-ogival but rounded at the tip ; the elytra are slightly convex 

 or nearly plane, covered entirely with round or elongate scales, or 

 with appressed hairs, or they have bands of scales, deeply and 

 irregularly punctured and always more rugose on the sides, costulate, 

 or having on each side two longitudinal impressions generally filled 

 with scales or a very short erect pubescence, laterally they are 

 distinctly narrowed towards the apex from under the humeral part, 

 and the sides of the dorsal abdominal segments are sometimes broadly 

 uncovered ; the propygidium is always partly uncovered and usually 

 fringed or banded with scales or squamose hairs similar to those 

 clothing entirely the abdomen, or edging the ventral segments ; the 

 pygidium in the male is usually plane, and declivous or sloping 

 forwards in most of the species, but it is sometimes convex at the 

 base {gonager), or very convex (oreopygus), or can project in an ovate 

 form (pygidialis), and is either tomentose, covered with scales, 

 glabrous, or pubescent ; in the female it is sub-horizontal ; the meta- 

 sternum is very large, scaly or tomentose, and the abdomen is very 

 compressed laterally in the male, and owing to the great development 



