514 Transactious South African Philosophical Society, [vol. xii. 



B-». Anterior tibiae with three strong teeth and three serrate ones. 

 C. Prothorax without anj' tubercle. 



Stridulating striae little developed, transverse, but 

 slightly divided at apex by a faint, impressed line ; basal 

 fold of pygidium with a broadly triangular excavation. 



Propygidimn without distinct longitudinal impressed 



line, cephalic tubercles moderately developed . . . . tuihnsi. 



Propygidium with three distinct longitiidinal impressed 



lines, cephalic tubercles moderately developed . . . . niger. 



Stridulating striae transverse, straight, divided for half 

 the length by a smooth space ; fold of pygidium broad 

 at middle and w^ith an ovate excavation infrictiix. 



A'. Head without any tubercle ; stridulating striae oblique. 



B3. Anterior tibiae with three strong teeth and three serrate ones. 



Transverse clypeal carina broadly interrupted, slightly 

 tuberculate where interrvipted ; pygidium punctate on 

 the sides only ; stridulating striae very broad indigiis. 



Transverse clypeal carina non-interrupted, very slightly 

 arcuate ; fold of pygidium somewhat broad, simple at 

 middle corvinits. 



Transverse clypeal carina partly emarginate in a short 

 crescent in the middle, interrupted in the female, upper 

 half of pygidium strongly punctate transversely . . . . mashiums. 



Transverse clypeal carina fine, nearly straight ; pygidium 

 aciculate in the median part along the upper margin only ; 

 fold of pygidium moderately narrow and with an elon- 

 gate impression in the centre in the male transvaalensis. 



Frontal and clypeal carinae running parallel, the former 

 not interrupted, the other forming a small arc of circle in 

 the centre ; elytra feebly punctate ; jiygidium smooth only 

 in the lower median part which is depressed indotatiis. 



Frontal and clypeal carinae running parallel, the former 

 not interrupted, the other produced into a sharp triangle 

 at middle ; elytra deeply punctate ; whole of the lower 

 part of pygidium smooth tristia. 



Clypeal carina broadly interrupted in the centre, frontal 

 carina distinctly arcuate at middle ; pygidium entirely 

 smooth arator. 



B-. Anterior tibiae with only one serrate tooth. 



Clypeal carina obliterated, frontal one very distinct and 

 triangular at middle ; pygidium with the basal part nearly 

 entirely scrobiculate except for a small, smooth median 

 space viator. 



