786 Transactions Soitth African Philosophical Society, [vol. xii. 



with the teeth strongly reflexed, and moderately angular laterally at 

 the base ; prothorax moderately convex ; scutellum as broad as long, 

 straight laterally for more than half the length and thence sharply 

 triangular, impressed transversely in the basal part ; elytra somewhat 

 triangular, distinctly narrowed laterally towards the a^^ex and sinuate 

 below the humeral part, but leaving only a narrow part of the surface 

 of the abdominal segments uncovered ; pygidium broad, flat, and 

 greatly inflexed in the male ; anterior tibiae tri-dentate outwardly, the 

 two basal teeth connate at the base and the apical one oblique as in 

 Heterochehis, hind legs moderately slender and simple in both the 

 sexes ; all the claws double, the inner one of the intermediate and 

 hind legs small, and very small respectively, and the outer cleft ; 

 posterior tibiae with a distinct apical spur. 



Of the three species included in the genus by Burmeister I retain 

 G. brevis only, the other two are true Omocratcs. The distinctive 

 characters of Goniasjndius are — (a) the singular shape of the upper 

 lobe of the maxillae, which is short, broad, transverse, with the teeth 

 disposed along the upper margin, whereas in Omocratcs it is long, 

 narrow, and sub-lanceolate, and (b) the shape of the scutellum which, 

 instead of being regularly triangular, is rectangular and triangular 

 only at apex, and deeply impressed transversely at the base. 



Key to the Species. 



Elytra black or reddish brown according to the sex, and having each 

 three bands of squamose greyish-white hairs ; apical tooth of anterior 

 tibite widely separated at apex from the intermediate one and longer . . hrevist. 



Elytra testaceous and with a fuscous border all round, apical tooth of 

 anterior tibise strongly turned downwards like the other two and not 

 broadly separated from the intermediate one . . . . . . . . simplex. 



GoNiASPiDius BEEVis, Bunu., 

 Handb. d. Entomol., iv., 1, p. 127. • 

 Black in the male, but with the discoidal part of the elytra and 

 the legs reddish brown in the female, which is in other respects 

 entirely similar to the male ; head and prothorax clothed with 

 villose, dense, greyish and black hairs, the clypeus has in front 

 three long, sharp, reflexed teeth all of equal size ; the prothorax, 

 wliich is not very convex in the centre, is depressed in the basal 

 part, which is nearly impunctate, the rest of the surface is, however, 

 scabroso-punctate ; scutellum hairy along the apical border ; elytra 

 scarcely broader than the base of the prothorax, plane, punctulate, 

 distinctly naiTowed laterally from the humeral part towards the apex, 

 not costate, but slightly impressed longitudinally along the suture, 



