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



Key to the Species. 

 A 2 . Anterior tarsi 4-jointed. 



Elytra with two rows of distinct tubercles on each side . . . . capensis. 



Elytra with two non-tuberculated costse on each side . . . . parrianus. 

 A 1 . Anterior tibise 5-jointed. 



Elytra with two rows of distinct tubercles on each side. . . . pentarthrias. 



B 2 . Head with a distinct frontal tubercle. 



Prothorax sharply angular laterally ; elytra bi-costulate, 

 transversely plicate ; pygidium with a median sub- 

 tectiform longitudinal carina caffer. 



B 1 . Head without tubercle. 



Elytra with two faint costse. 



Pygidium with a short apical longitudinal carina . . . , aciculatus. 



Pygidium with a conspicuous basal keel natalensis. 



Scaptobius capensis, Gory and Perch., 



Monogr. d. Cet., p. 117, pi. 16, fig. 6 ; 



Westw., Thesaur. Entomol., p. 52, pi. x., fig. 6. 



Black, moderately shiny ; head very convex in the frontal part, 

 not tuberculated, very briefly setulose and covered with irregularly 

 disposed granules ; prothorax ampliate laterally in the anterior part, 

 the ampliate part being sub-angularly rounded, and sub-diagonal 

 thence to some distance from the base where it is deeply incised, the 

 upper part of the incision is very sharp, the much narrowed basal 

 part is straight, and the angles slightly rounded, the surface is con- 

 spicuously plicate longitudinally with granules interspersed, especially 

 in the anterior part, the margin is briefly bristly, and there are a 

 few luteous, very short setae on the disk ; scutellum strigillate ; elytra 

 with the suture tuberculate and having two rows of tubercles on each 

 side, the edge of the lateral deflexed part is indistinctly tuberculate, 

 the vertical part and the two dorsal intervals strigillate ; pygidium 

 vertical, transversely strigillate ; under side roughly punctate 

 strigillate ; anterior tarsi 4-jointed, the joints short, nodose at tip. 



Length 9^-10 mm. ; width 4-4f mm. 



Hab. Cape Colony (Hanover, Somerset East, Graham's Town), 

 Transvaal (Eustenburg, Pretoria). 



