180 Transactions South African P]ti!osoj)hical Society, [vol. xii. 



Cephalic horn dilated at tip and emitting an inner 

 ramus at some distance from the base ; prothorax 

 with two or sometimes four median tubercles, 

 humeral part produced in a sharp tubercle (pi. xxxv., 

 fig. 8) rangifcr. 



Cephalic horns a little thickened at tip, basal part of 

 same produced in two short, incurved horns ; pro- 

 thorax with a small, median tuliercle (pi. xxxv., 

 fig. 10) rarus. 



Cephalic horns not thickened at tip, basal part pro- 

 duced in two shorter incurved horns ; prothorax with 

 a deep anterior excavation having on each side a 

 sub-vertical, conspicuous compressed tooth (x^l. xxxv., 

 fig. 9) fiircifer. 



a'. No prothoracic horns, cephalic horn mostly absent, 



or if present reduced to a short tubercle or carina. 

 b-. Prothorax with two longitudinal smooth lines. 



Colour totally coppery or occasionally green; pro- 

 thorax with a deep median sulcus, edged by two 

 broad, raised, smooth lines reaching from apex to 

 base (pi. xxxvi., fig. 7) bicallosns. 



Colour of head and prothorax greenish coppery ; 

 elytra coppery red ; clypeus not emarginate ; pro- 

 thorax with two median, slightly raised, smooth lines 

 reaching from apex to median part^(pl. xxxvi., fig. 12) sappliyrimis. 



Colour totally green ; clypeus emarginate and with a 

 tooth in the centre of the emargination ; prothorax 

 with the two median lines hardly defined (pi. xxxvi., 



fig. 1.3) SUSJ)CCt!lS. 



b'. Prothorax with one median longitudinal line reaching 

 from apex to base. 



Prothorax closely pitted in the central part of the 

 disk and scabrose laterally only ; elytra regularly 

 pitted (pi. xxxvi., fig. 15) aciculatiis. 



Prothorax scabrose, pitted only near the base ; elytra 



roughly pitted optiviis. 



C-. Head with a tubercle or carina on vertex. 



Cephalic tubercle or carina small, two small blunt 

 tubercles on anterior part of prothorax] (pi. xxxvi., 

 fig. 11) brucei. 



Cephalic carina very high, and .long; a faint, smooth 

 longitudinal line in the anterior part of the prothorax 

 beginning near two slightly rounded, small, smooth 

 spaces (pi. xxxvi., fig. 14) gemmatus.. 



c\ Prothorax without any median longitudinal line. 



Prothorax finely granulose, colour black scniculiis. 



