1900.] Catalogue of the Coleoptera of South Africa. ■ 105 



middle underneath ; in the small development, however, the spine is 

 replaced by a triangular, somewhat blunt process underneath, and 

 the trochanter is not so much developed. Apart from the shape 

 of the sheaths of the penis which is different from all the others, and 

 only approximates to that of S. atratus, this species can also be 

 distinguished by the absence of inner spine at a small distance from 

 the knee of the intermediate tibiae. 



Length 7|— 12 mm. ; width 5-8 mm. 



Hab. Cape Colony (Cape Town, Worcester, Stellenbosch, Paarl), 

 Natal (Durban), Transvaal (Lydenburg), Rhodesia (Zambesi River), 

 Mozambique (Lourengo-Marquez) . 



Sisyphus muricatus, Oliv., 



Plate XXXIV., %. 18; Plate XXXVIII. , fig. 19. 



Entom., i., 3, p. 188, pi. xxvii., fig. 240 ; Gory, Monogr., p. 7, pi. i., 



fig. 1. 



Black, not metallic ; emargination of clypeus broad, not deep, the 

 angles long and sharp, gena3 alone angulate laterally, head finely and 

 sparsely punctured, punctures briefly setigerous ; prothorax very 

 declivous in front from the apex to more than half the length, and 

 somewhat plane on the upper side, very deeply constricted laterally, 

 and with the anterior part produced in a greatly developed triangular 

 process ; the constricted part is deeply excavate and the upper part 

 sharply carinate, it is covered with moderately long, brownish or 

 dark hairs curved at tip, very closely set, but not fasciculate, and in 

 the middle of the discoidal part there is a fine impressed longitudinal 

 line ; elytra fitting against the prothorax but distinctly ampliate at a 

 short distance from the shoulders, they are striate, but the striae are 

 very faint, and they have five rows of small fascicles of hairs not set 

 very close to one another ; pygidium hairy ; anterior tibiae without 

 teeth underneath. 



Male : Intermediate tibiae slightly sinuate on the upper side, 

 ampliate at middle underneath, trochanters produced in a sub- 

 vertical, short, but very distinct spine ; the posterior trochanters 

 are also produced in a similar spine, and the femora have a broad, 

 triangular, not very sharp tooth at about the middle ; the posterior 

 tibiae are conspicuously curved inwardly at tip, but not serrate or 

 hairy in the inner part ; the genital armature is slender, and the 

 valvular sheaths are smuate from near the base, little declivous at 

 a;pex, but not much curved at tip. 



Female : Trochanters of intermediate and posterior legs projecting, 



