104 Transactions South African Philosophical Society, [vol. xii. 



not otherwise differ, and as for S. calcaratus, Klug, not only does 

 this figure agree very well with S. quadricollis , but I have also got 

 some examples from the same locality. Not having been able to 

 examine the genital armature, I cannot say with certainty that it 

 is the same species, although I believe it to be such. 



Sisyphus atratus, Klug, 

 Plate XXXVIII., fig. 16. 



Monatsb. Berl. Acad., 1855, p. 651 ; Peter's Eeis., 1862, p. 218, 



pi. xii., fig. 12. 



Lighter brown than most examples of S. quadricollis, but other- 

 wise similar in shape, sculpture, and vestiture ; the distinctive 

 characters are the presence in the male of a sharp median tooth 

 directed backwards in the posterior legs, and the shape of the 

 valvular sheaths of the penis which are not quite so short, are 

 emarginate past the middle, and are more sharply curved at tip ; in 

 the anterior tibiae the intermediate tooth underneath is absent. 



Length 9 mm. ; width 5J mm. 



I have seen only one example (male) of this species. It is a little 

 lighter in colour than King's figure, and it may not after all prove to 

 be the same species, but an inspection of the genital armature of the 

 type, which is in the Berlin Museum, w^ould soon settle the point. 



Hah. Cape Colony (Queen's Town). 



Sisyphus spinipes, Thunb., 



Plate XXXIV., fig. 19. ; Plate XXXVIII., fig. 17. 



Mem. Ac. St. Petersb., vi., 1818, p. 411. 



S. spinipes, Gory, Monogr., 1833, p. 8, pi. i., fig. 4. 



Shape of the preceding species, but more robust, the colour is 

 darker brown and that of the pro thorax dark bronze, the elytra have 

 a peculiar silky sheen, and the hairs of the upper side are longer and 

 denser ; the distinctive characters are the two spines under the tibiae 

 which are very strong, the absence of a sharp tooth near the apex of 

 the intermediate femora which are carinate underneath right to the 

 trochanter, the posterior tibiae which are serrate from the apex to 

 near the joint of the knee, whereas in all the preceding species the 

 serration reaches only from the base to the median part, the tro- 

 chanter of the posterior femora is long or very long and sharp, and 

 runs somewhat longitudinally to the femur which has a long spine at 



