Transactions South African Philosophical Society, [vol. xiii. 



Claws cleft in both sexes, lower tooth 

 wider than the upper. 



Anterior tibiae bi-dentate. 



a 2 . Antennal club of male 3-jointed. 



Mentum broadly deplanated in front, 



femora broadly dilated Autoserica. 



Mentum not deplanated in front, 



femora not broadly dilated . . . . Xedymoserica. 



a 1 . Antennal club of male 4-jointed. 



Anterior tibise bi-dentate, the four 



joints of the club equal in length.. Neoserica. 



Anterior tibiae tri-dentate, inner joint 



of the club shorter than the others . . Etiserica. 



F\ Antennae 9- jointed. 



a 2 . Anterior tibiae bi- or tri-dentate. 



b 2 . Anterior tarsi normal, claws normally 



cleft in both sexes Stenoserica. 



The three ultimate joints of anterior 

 tarsi short, triquetrous, last one 

 swollen, lower tooth of inner claw 

 very broadly dilated Diaphoroserica. 



a 1 . Anterior tibiae tri-dentate. 



Claws normally cleft, lower tooth 

 wider than the upper. 



Body glabrous on the upper side, 



inner margin of hind tibiae straight Hyboserica. 



Body with erect bristles on the upper 

 side, inner margin of hind tibise 

 slightly ampliate Philoserica. 



b 1 . Claws abnormal in the male. 



Anterior tarsi very short, ultimate 

 joint enormously dilated, claws dis- 

 torted, lower tooth broadly ampliated Euronycha. 



Anterior claws of male very long 

 and curving under the last joint of 

 the tarsi, penultimate joints short . . Gryphonycha. 



E 1 . Head with a clypeal and a frontal suture. 



Anterior tibiae tri-dentate. 



Antennae 9-jointed. 



Antennal club twice the length of the pedicel, 



and curved Idceserica. 



