1902.] Catalogue of the Coleoptera of South Africa. 759 



tri-dentate, prothorax with a shallow median groove reaching from 

 the median part to the base ; elytra distinctly bi-striate and slightly 

 bi-costulate on each side, coriaceous and clothed with a thick but 

 very short appressed greyish pubescence; propygidium, abdomen, 

 pectus and legs villose, the hairs flavescent ; spine of trochanters 

 small, but distinct, hind femora somewhat robust, simple ; hind 

 tibite also simple, moderately ampliate, somewhat concave inwardly 

 at apex and not mucronate, hind claw robust, single, simple. 



Female unknown. 



Length 6^ mm. ; width 3i mm. 



Hab. Natal (Estcourt). 



Heterochelus arthriticus, Fabr., 



Plate XLIL, fig. 34. 



Spec. Insect., i., p. 44. 



Oliv., Ent., i., 5, p. 75, pi. v., fig. 44 a.b. 



Male : Black, with the elytra fuscous brown ; the scutellum is 

 sparsely covered with greyish-white scales which narrowly edge 

 the propygidium and the segments of the abdomen ; pygidium 

 without any scales ; head and prothorax with the usual sculpture, 

 and clothed with a dense, moderately short, black pubescence, 

 clypeus sharply tri-dentate, prothorax with a short but deep basal 

 furrow ; elytra distinctly attenuate laterally towards the apex, 

 clothed with a dense appressed dark pubescence, and very slightly 

 costulate ; hind femora robust and simple, trochanters without 

 spine, hind tibiae very swollen in the middle, and ending at apex 

 in a spine-like mucro on each side, the lower one being a little 

 longer than the upper, hind tarsi contracted, very massive and 

 glabrous, the first four seem to be soldered and the second, third, 

 and fourth are sharply angular inwardly, the fifth is longer than all 

 the other four put together and has a conspicuous sub-bifid tooth 

 underneath, the hind claw is very robust and very long, single and 

 simple. The shape of the hind legs is similar to that of some species 

 of Pachycnema. 



Female : Black, wath the elytra light testaceous ; the pubescence 

 on the prothorax is longer and lighter, the scales are more like 

 squamose hairs on the propygidium and abdominal segments, and 

 the pygidium is without scales and pubescent. 



Length 4-6 mm. ; width 2^ 3 mm. 



Hab. Cape Colony (Cape Town, Stellenbosch, Paarl, Malmes- 

 bury). 



