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



Leribe of the Sub-Family SERiciNiE, connects the latter with the 

 Pachypodini. Owing to the obliteration of the labrum the genera 

 Achelyna and Pleistophylla, are also connected with the Sericince, but 

 are differentiated by the mode of insertion of the spurs of the hind 

 tibiae as well as by their Pachypodinous appearance. 



Key to the Genera. 



A 2 . Labial palpi inserted laterally. 



B. Antennae 10-jointed. 



C 2 . Frontal part not carinate laterally above the eyes. 



D 2 . Vertex without a transverse ridge. 



E 2 . Anterior tibiae tri-dentate outwardly. 



F\ Antennal club tri-jointed, joints laminate, 

 parallel. 



Antennal club not very long, acuminate ; 



claws with a tooth-like angle at the base Onochceta. 



Antennal club very long, not acuminate, 

 claws with a sub-median vertical tooth 

 underneath JEgostetha. 



F 2 . Antennal club more than tri-jointed, joints 

 laminate, parallel. 



Antennal club longer, 5-jointed .. .. Macrophylla- 



Antennal club 6-jointed Pleiophylla. 



E 1 . Anterior tibiae bi-dentate outwardly. 



Antennal club 7-jointed EucylophyUa. 



F 1 . Antennal club tri-jointed, joints spatuli- 

 form. 



Head with a frontal tubercle ; prothorax 



excavate Tlaocera. 



C 1 . Frontal part carinate laterally. 



D 1 . Vertex with a transverse ridge or prominence. 



E £ . Anterior tibiae tri-dentate outwardly. 



F 2 . Antennal club tri-jointed. 



Clypeus straight but slightly emarginate 

 in front. 



Upper lobe of . maxillae plainly toothed ; 

 antennal club not much longer than the 

 pedicel KraseophyUa. 



