184 Transactions South African Philosophical Society, [vol. xm. 



Key to the Genera. 



A 2 . Clypeus arcuate or straight laterally, not incised in front True Schizonychides. 



B 2 . Episterna broad or somewhat broad, not carinate along 

 the epimera. 



C 2 . Anterior margin of prothorax with a lateral fringe 

 of hairs, nude in the centre. 



D 2 . Frontal part with a posterior transverse eleva- 

 tion or keel along the base. 



Clypeus with a transverse frontal suture and 

 an intermediate frontal keel ; claws with two 

 basal vertical teeth Glyptoglossa. 



Clypeus with a frontal, slightly arcuate keel, 



claws cleft underneath Beriqua. 



B 1 . Episterna narrow, carinate along the epimera. 



a 2 . Labial palpi inserted on the outer face of the mentum. 



b3. Clypeus with the outer angles rounded. 



c-. Claws three-toothed underneath. 



Prothorax convex. 



d 2 . Clypeal carina set close to the frontal suture and 

 often obliterating it. 



Antennaa 10-jointed Schizonycha. 



Antennae 9-jointed Atys. 



d l . Prothorax hollowed in front Entyposis. 



a 1 . Labial palpi inserted laterally. 



b 2 . Clypeus with the outer angles rounded. 



c 1 . Claws long, slender, simple underneath Holisonycha. 



b x . Clypeus straight laterally with the angles sharp. 



Claws 4-toothed underneath Spathoschyza. 



D 1 . Frontal part without a transverse elevation or 

 ' keel along the base. 



a 2 . Clypeus with a frontal keel. 



Keel very sharp, antennae 9-jointed Syngeneschiza. 



C 1 . Anterior margin of prothorax, pubescent in the 

 centre. 



a 1 . Clypeus with a frontal suture. 



Third antennal joint not elongated, lower tooth 



of claws truncate . . Suntenmonycha. 



A 1 . Clypeus porrect, little rounded laterally, incised or sinuate 



in front Psiloxychides. 



