Transactions South African Philosophical Society, [vol. xiii. 



D 2 . Clypeus with only a frontal suture Doleroserica. 



B 1 . Clypeus strongly constricted laterally, usually sharply tri- 

 dentate in front. 



C 1 . Posterior eye-keel connected with the genal canthus 

 or only very narrowly separated from it. 



D 2 . Clypeus with only a frontal suture. 



Antennal club of male 5-jointed Microtrochalus. 



D 1 . Clypeus with a clypeal carina and a frontal 

 suture.* 



Antennal club tri-jointed in both sexes . . . . Ablaberoides. 



Gen. PLEOPHYLLA, Erichs. 



Nat. Ins., iii., 1847, p. 695. 



Mentum long, gradually ampliated from the base to the anterior part 

 where it is one-third broader, the angles are much rounded and the 

 edge of the ligular part deeply and arcuately emarginate, the outer face 

 of the ligular part, which is entirely fused with the mentum, is very 

 convex in the centre and impressed on each side ; labial palpi long, 

 apical joint slightly rounded towards the apex outwardly, straight in- 

 wardly, slightly acuminate in front, apical joint of labial palpi similar 

 in shape but a little longer, maxillae short, very robust, provided with 

 four strong teeth almost transversely disposed ; head as broad as 

 long, with the eyes large, the genae form only a short canthus and 

 project very little, the clypeus is divided from the frontal part by a 

 transverse impression, and is moderately narrowed laterally, almost 

 straight in front, with the margin not angular in the centre, and the 

 outer angles distinct but not sharp ; antennae 10-jointed and longer 

 than the pedicel in both sexes, third joint of pedicel one-third as 

 long as the club, which is 6-jointed in the male, that of the female is 

 flabellate like that of the male, but 5-jointed, the inner joint, how- 

 ever, is shorter than the one following ; prothorax sloping in the 

 anterior part, somewhat attenuated laterally in front, very little 

 sinuate behind, wider across the strongly sinuate base than across 

 the apex, the outer margin has a fringe of long, seriate bristly hairs ; 

 scutellum long, ogival, not very sharp at the apex ; elytra elongated, 

 slightly sinuate laterally at a short distance from the shoulders, and 

 covering behind the greatest part of the propygidium ; anterior coxae 

 sharply conical and not very slanting ; metasternum produced into a 

 conspicuous aculeate process between the intermediate coxae, hind 



* This suture is carinate in T. <eiieu$ and in T. tardus. 



