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



the second, fourth, and eighth intervals ; the stridulating strige on the 

 propygidium are very narrow and very diagonal, and the upper half 

 of the pygidium is roughly punctured, the lower half being smooth ; 

 the inner claw is slightly sinuate and moderately sharp at tip. 



The female of this species, or at least the examples which I take 

 to be such and which come from the same locality, are more elongate 

 than the male ; the clypeal line is more distinctly interrupted, there 

 is no puncture on the second interval, and only one or two on the 

 fourth ; the two rows of striae on the pygidium are not quite so 

 diagonal ; the pygidium has the same sculpture as the male. 



Length 14-16 mm. ; width 8-8J mm. 



Hah. Southern Ehodesia (Mazoe, Salisbury). 



Heteronychus transvaalensis, n. spec, 

 Plate XL., fig. 5. 



Very similar to H. mashunus ; it is a little smaller and more 

 cylindrical ; the punctate striae on the elytra are not so deep, and 

 the punctures are shallower ; the clypeal carina is entire, and 

 the frontal one, although very fine, is distinct and also trans- 

 verse in the centre ; but the sculpture of the pygidium is very 

 different, being almost entirely smooth except for a very narrow 

 aciculate basal band, and with the aciculation a little more defined on 

 the sides ; the fold of the pygidium has also a transverse impression in 

 the centre ; in the female the four intermediate abdominal segments 

 have a long series of transverse punctures. 



Length 12J~13 mm. ; width 7 mm. 



Hah. Transvaal (Johannesburg). 



Heteronychus indotatus, n. spec. 



More robust than the four preceding species, owing to its slightly 

 greater width in proportion to its size ; the prothorax, which is a 

 little more plane is less arcuate laterally in front ; it is very shiny ; 

 the clypeal carina is fine but distinct, not interrupted, and the frontal 

 one which is equally distinct, runs parallel to the clypeal one, and 

 forms a small arc in the centre, the head is very rugose right 

 up to the base ; the scutellum is triangular and has a fine median 

 longitudinal line ; the striae on the elytra are very slightly impressed, 

 and the punctures very fine and shallow, with scarcely any trace of 

 them in the dorsal and supra-lateral intervals ; the pygidium is 

 slightly different in shape from that of the other South African 



