778 Transactions South African Philosophical Society, [vol. xii. 



A'. Anterior tibioe tri-clentate outwardly. 



B3. Clypeus with the outer angles dentate. 



Posterior part of the prothorax of the male clothed with 

 dense, sub-lanuginose scales ; elytra and pygidial part 

 densely scaly deiire><mf. 



Posterior part of the prothorax of the male not scaly, 

 elytra clothed with greyish white appressed hairs ; pygidium 

 densely scaly spatulipennis. 



Posterior part of the prothorax of the male not scaly, elytra 

 hardly pubescent; pygidial part with scales so closely set 

 as to form a coating ]iumili>i. 



Whole surface of the body, except the head, pygidial part, 

 and abdomen, clothed with round scales, prothorax dis- 

 tinctly elongate placenx. 



B'. Clypeus tri-dentate. 



Posterior part of the prothorax clothed with dense, thick 

 scales ; elytra with closely set, ap^iressed, sub-squamose 

 hairs ; pygidial part densely scaly ^jZai(Si'^(7i<. 



Same vestiture as j3Zai/sf^i7i's, but prothorax without scales 



in the posterior part rariahilis. 



B". Clypeus quadri-dentate. 



Prothorax not scaly ; elytra with squamose appressed 

 hairs, but having on each side three narrow bands of 

 scales and the apex also scaly ; hind claw single, simple . . nmelltt^. 



Omocrates mexdax, n. spec. 



Male : Black, with the elytra light testaceous and having a lateral 

 and apical infuscate band beginning at about the middle of the side 

 and reaching the suture ; head scabrose, clypeus quite straight at the 

 apex and with the outer angles sharp, it is covered like the prothorax 

 with a very dense, somewhat appressed light fulvous pubescence, 

 and the prothorax, which is somewhat depressed in the centre of the 

 basal part, has a longitudinal median groove ; scutellum very long 

 and sharply triangular and densely hairy; elytra as broad as the 

 prothorax at the base, very conspicuously narrowed laterally towards 

 the apex ; plane, not costulate but having a sub-transverse basal 

 impression near the callus, rugulose and covered with appressed, sub- 

 flavescent fine hairs ; propygidium, pygidium, and abdomen covered 

 with flavescent or yellow lanuginose scales all of the same colour on 

 the pygidium ; hind legs densely hairy, hind femora and tibia? simple, 

 the latter moderately dilated, hind claws double, the larger one cleft ; 



