652 Transactions South African Philosophical Society, [vol. xiii. 



by a space about equal to their own diameter in the anterior and 

 posterior parts ; elytra having in addition to the entire sutural 

 stria two juxta-sutural ones distinct from the base to the posterior 

 rounded part, and also a third, ill-defined series of punctures; 

 beyond these the punctures, which are moderately closely set from 

 the base to the rounded posterior part, are more shallow than in 

 0. zambcsianus $ . 



This species might prove to be the $ of 0. plebeius, but I doubt 

 it. Its nearest ally is 0. incultus (Cat. i., p. 504). but the punctua- 

 tion differs. 



Length 9 mm. ; width 5h mm. 



Hah. Southern Rhodesia ; no exact locality. 



ORPHXUS MASHUNEXSIS, 11. Sp. 



Brick-red, shiny, labrum genae and prothorax with a fringe of 

 fulvous setose hairs ; clypeus and anterior part of the head some- 

 what closely punctate, the remainder smooth ; prothorax more 

 ampliate laterally in the anterior part than towards the middle, and 

 nearly straight thence to the base, covered with smooth round punc- 

 tures separated from each other by a space equal to their own dia- 

 meter, but having in the centre a narrow longitudinal smooth space ; 

 scutellum impunctate ; elytra with the juxta-sutural stria distinct 

 and entire and having another faint punctate stria disappearing at 

 about the median part ; the other punctures are deep, round, equi- 

 distant and obliterated in the posterior rounded part. 



This species is easily recognised by its more parallel prothorax 

 which is ampliate rounded in the anterior instead of in the median 

 part. It should follow 0. piugnax (Cat. i., p. 500). 



Length 8 mm. ; width 4i mm. 



Hab. Southern Rhodesia (Salisbury). 



Sub-Family DYNAST1N.K. 

 Gen. HETERONYCHUS, Cat. i.. p. 511. 



HetEKOXYCHUS MOSAMBIOUS, 11. sp., 



PI. XLVIIL, figs. 30, 31, 32. 

 Black, shiny, body sub-parallel, clypeal and frontal carina united, 

 somewhat obsolete in the centre, clypeus and anterior frontal part 

 transversely and somewhat irregularly punctulate plicate ; prothorax 



