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



Mesosternal process arcuate at apex, maxillary 

 lobes simple in both sexes ; anterior tibise in- 

 cised at the base, and femora strongly hamate 

 in the <? Neptunides. 



d 1 . Inner part of anterior tibial not denticulate 

 in the 3 . 



Mesosternal process long, laminate, slightly 

 reflexed at tip ; inner lobe of maxillae dentate 

 in the <? , both hamate in the ? Coelorrhina. 



Mesosternal process laminiform, triangularly 



acuminate, slightly reflexed at tip Stephanorrhina. 



Ds. Clypeus sub-parallel in the s , the centre of 

 the anterior margin produced in the $ into a 

 bi- or tri-fid horn, occasionally reflexed and 

 laminate, or simple (Heterorrhinii.) 



E 2 . Sternal process strongly projecting beyond 

 the coxae. 



F 2 . Base of prothorax sinuate or arcuate 

 above the scutellum. 



or. Scutellum grooved laterally. 



b~. Head simple in either sex. 



Mesosternal process with au orbicu- 

 lar or sub-orbicular suture ; inner 

 lobe of maxillae simple, upper one 

 truncate at apex and concave in- 

 wardly ; hind femora strongly deve- 

 loped, dentate at base in the $ . . Eccoptocnemis. 



Mesosternal process very short, tri- 

 angular, both maxillary lobes simple 

 in either sex Scythropesthes. 



Mesosternal process long, broadly 

 triangular, slightly slanting down- 

 wards Inhambane. 



b 1 . Head of <? simple or provided with 

 two sub-porrect or porrect horns in 

 thee? . 



Mesosternal process long, slender 

 and strongly recurved at apex ; inner 

 lobe of maxillae hamate, upper one 

 sharply bi-hamate Melinesthes. 



Inner lobe of maxillae with a hamate • 



tooth, upper lobe mucronate only 



in both sexes. Head of <$ with an 



horizontal basal horn overlying the 



centre of the clypeus, the anterior 



margin of which is reflexed into a 



laminate process Oenyodonta. 



