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



B 1 . Insertion median, basal joints nearly or quite contiguous. 



C 3 . Antennas 10-jointed. 



D 2 . Antennal club tri-jointed. 



E 2 . Anterior tibiae tri-dentate. 



Labrum obliterated, clypeus strongly aculeate 

 in the vertical part ; frontal part projecting as 

 a laminate keel above the declivous clypeus . . Aipeiopsis. 



E 1 . Anterior tibiae bi-dentate. 



Labrum transverse, very narrow, second and 



third joints of labial palpi fused Pseuclachloa. 



D 1 . Antennal club 6- jointed. 



Clypeus laminate, projecting much beyond the 



vertical acuminate labrum Trichinojjus. 



C 2 . Antennas 9-jointed. 



Anterior tibiae tri-dentate ; antennal club tri-jointed ; 

 labrum triangular but with the suture nearly oblite- 

 rated ; pygidium strongly drawn forwards Achloa. 



C 1 . Antennae 8-jointed. 



Anterior tibiae tri-dentate ; antennal club tri-jointed ; 



apex of pygidium reaching to the base of the femora CEdanomerus. 



Gen. ONOCHiETA, Erichs., 

 Nat. Ins., iii., 1847, p. 654. 

 Mentum broad at the base, narrowed at about one- third of the 

 length whence it is sub-parallel with the outer angles of the apical 

 part slightly rounded, and the apex truncate, yet slightly sinuate 

 in the middle, separated on the outer face from the ligular part by a 

 somewhat broad, shallow furrow ; labial palpi inserted nearly, but 

 not quite on the sides, last joint somewhat long, wholly straight 

 inwardly, and outwardly only for about half the length, whence it 

 is obliquely attenuate towards the sharply acuminate tip; upper 

 lobe of maxillae bluntly transverse at the tip, somewhat hollowed 

 inside, inner lobe shorter than the upper, tooth-like, and also blunt 

 at the tip ; maxillary palpi long, apical one straight inwardly, more 

 convex outwardly and slightly curved towards the apical part ; 

 mandibles arcuate and with the upper margin compressed at the 

 tip ; clypeus as long as the frontal part, slightly ampliated laterally 

 from the base towards the basal angles which are only slightly 

 rounded, truncate in the anterior part which is nearly laminate and 

 projects much beyond the narrow, emarginate labrum, frontal part 



