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



Clypeus truncate and plainly sinuate in front ; 

 prothorax with a longitudinal smooth line dis- 

 tinct only from the median to the basal part ; 

 last abdominal segment wide, swollen . . . . manicana. 



a 1 . Head without a basal carina. 



Clypeus truncate and sinuate in front ; pro- 

 thorax with a median longitudinal smooth line ; 

 last abdominal segment somewhat narrow, 

 swollen vaalensis. 



E 2 . Penultimate abdominal segment wider than the 

 antepenultimate. 



F 2 . Upper tooth of anterior claws only shorter than 

 the lower. 



G 1 . Basal carina projecting more or less distinctly 

 in the centre. 



H 2 . Basal angle of prothorax broadly rounded. 



Clypeus semicircular in front in both the 



sexes t affinis. 



H 1 . Basal angle of prothorax sharp. 



Clypeus blunt in front, last abdominal seg- 

 ment narrow, not swollen languens. 



Clypeus blunt in front, but abdominal seg- 

 ment somewhat broad, swollen ignava. 



F 1 . Upper tooth of each claw shorter than the lower. 



I 2 . Body elongated, sub-cylindrical in both 

 sexes. 



a 2 . Head with a basal carina. 



Last abdominal segment very broad, 

 swollen egens. 



ft 1 . Head without a basal carina. 



Each puncture with a minute yet plain 

 hair on the upper side, and a white scale 

 on the under side ; last segment broad, 

 convex pauperula. 



Clypeus deeply emarginate in front, 

 clypeal carina plainly triangular ; last 

 abdominal segment broad, not swollen. . ovampoana. 



I 1 . Body sub-cylindrical in the male, swollen 

 and very convex in the female. 



a 2 . Basal cephalic carina very sharp. 

 Prothorax with raised, irregular areolets 

 and a very plain, longitudinal raised 

 line spuria. 



