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



the anterior part of the disk, one on each side ; scutellum black ; 

 elytra red, but with irregular transverse black bands forming with the 

 red background a tessellation in which the black patches are broader 

 than the red ; under side and legs black, abdomen with a lateral series 

 of reddish macules ; head and clypeus covered with confluent, 

 elongated punctures the walls of which form a network ; prothorax 

 covered with a similar network, but the walls of the punctures are 

 somewhat obliterated in the central part of the disk, the punctures 

 being there strongly cicatricose ; apical part of scutellum impunc- 

 tate ; elytra distinctly bi-costate and with a third rudimentary costa 

 on each side, the first two intervals are separated by geminate 

 lines, the others by several turning on the sides to a duplicate series 

 of oval, cicatricose punctures ; pygidium strigillate ; abdomen dis- 

 tinctly punctate; pectus strongly punctate and very briefly 

 pubescent; median part of metasternum punctate, mesosternal 

 sharply aculeate, the triangular suture well-nigh obliterated. 



Length 13 J mm. ; width 7 mm. 



Hab. Ovampoland (Okovango Eiver). 



I have seen one example only ( 5 ). 



Group DIPLOGNATHII. 



I include in this group two genera characterised by the shape of 

 the clypeus which is carinate laterally, the angles being sharply 

 angular, or projecting considerably beyond the anterior margin 

 in both sexes. 



Gen. DIPLOGNATHA, Gory and Perch., 

 Monogr. d. Cet., 1833, p. 31. 



Mentum very convex, sinuate in the anterior part, with the 

 outer angles rounded ; maxillae robust, upper lobe short, produced 

 in two strong, hamate teeth and with a dense pencil of hairs 

 outwardly, inner lobe hairy inwardly and armed with a sharp hooked 

 tooth; clypeus carinate laterally and with the outer angles 

 acuminate and reflexed ; prothorax gradually ampliated laterally 

 as far as the median part, sinuate thence to the base ; the latter very 

 slanting on each side ; scutellum sunken, sharply acuminate ; elytra 

 elongated, non-costate or striate ; sternal process aculeate acumi- 

 nate, without suture ; anterior tibiae tri-dentate, intermediate and 

 posterior uni-dentate ; the inner part densely ciliate. 



