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



of punctures on the sixtli and eighth, except in the rounded posterior 

 part which is deeply and irregularly pitted; the pygidium is 

 entirely smooth but for a slight aciculation in the angles of the 

 basal part ; fold of pygidium reduced to a mere line ; metasternum 

 with an impressed, longitudinal median line. 



Length 11-15 mm. ; width 6-7 mm. 



This species, which seems to have a wide range in South Africa, 

 can be easily recognised by the nearly entirely smooth pygidium. 



Hah. Cape Colony (found everywhere), Natal (Durban, New- 

 castle, Maritzburg), Transvaal (Potchefstroom, Rustenburg, Johannes- 

 burg), Southern Ehodesia (Salisbury). 



Herr H. Kolbe has endeavoured to distinguish H. cricetus 

 from H. arator (Entom. Nachr., 1900, p. 163), but I do not think 

 there is any justification for doing so. The size of arator is very 

 variable, and the small modifications mentioned by Kolbe depend to 

 a great extent on the size. The genital armature of the two is 

 identical. I have seen examples collected by Ecklon and Zeyher 

 some sixty years ago, and identified by Klug, I believe, as H. cricetus, 

 Hausm., at the Berlin museum. 



Heteeonychus viatok, n. spec, 

 Plate XL., fig. 8. 



Resembles slightly H. indotatus, but it has a more elliptical appear- 

 ance owing to the elytra being only very slightly sinuate laterally 

 before the median part, and the fold of the margin is more con- 

 spicuous ; the prothorax is also gradually although slightly attenuate 

 laterally from the basal to the apical part ; the clypeal carina is 

 obliterated, but the frontal carina is very distinct, and produced in 

 the middle into a sharp triangle the point of which is directed towards 

 the base ; the head, except the basal part, is very rugose ; scutellum 

 sharp and with a distinct, median impressed line ; elytra very feebly 

 punctato-striate and without any trace of punctures in the intervals 

 except in the posterior part of the eighth, where there are a few ; 

 apical part broadly but shallowly pitted ; pygidium with a broad, 

 rugose basal band extending over one-third of the width, the other 

 two-thirds quite smooth ; metasternum normal ; anterior tibiae with 

 only one intermediate serrate tooth between the basal and the 

 second one. 



Length 14-15 mm. ; width 8-9 mm. 



Hah. Transvaal (Potchefstroom), Natal (Newcastle, Durban). 



