! Tempokaky.] 



562 Tranmctions South African Pliilosophical Socieii/. [vol. xii. 



the base to a third of the length, emai-ginate there antl shghtly 

 attenuate towards the apex where it is very deeply sinuate in the 

 outer angles, and bi-lobate at the apex ; it is not very convex in the 

 median part, but is deeply impressed at apex ; maxilUe with the upper 

 lobe armed with two sharp teeth bent at right angles, the upper of 

 which is a little concave and placed above the second one which is not 

 liollowed and is set on the inner margin and a little below the first, 

 and below these the inner lobe is produced into a tritid, transverse 

 tooth ; palpi and mandibles as in BMzoplatys, but the mandibles are 

 more aculeate and produced at apex into a triangular reflexed tooth. 



Rhizoplatodes castaneipennis, Bohem., 



Plate fig. 



Insect. Caffrar., ii., p. '11. 



RJiizoplatys ainhiijuii.s, Gerst., Deck. Reis., p. 873, ]). lOo, pi. vii., 

 fig. 2. 



Head and prothorax piceous black ; el\ tra either piceous black or 



chestnut-brown, legs piceous red; head very rugose; clypeus very 



obliquely attenuate laterally, and with the apical part triangular and 



reflexed ; in the male the posterior part of the head is deeply 



excavate in the middle, and there is, close to the apex of the 



rlypeus, a conspicuous, vertical tooth, hooked backwards at tip 



iind about 2 nnn. long ; in the female there is a similar impression, 



but much more shallow, the dentate apex of the clypeus is prolonged 



towards the median part in a short, high carina, connected often 



with a sharp tubercle situated in the centre of the head ; prothorax 



briefly refuse in front in the male, the refuse part being divided 



nearly into two by a triangular, narrow longitudinal impression 



which is continued as a deep furrow along the discoidal part as 



far as the base ; in the female the anterior part is not retuse, and 



the impression is more in the shape of a groove, also continued as 



far as the base ; in both sexes the surface is covered with round 



punctures a little remote in the posterior part and denser and a little 



deeper in the anterior and lateral parts ; scutellum punctate in the 



base and centre; elytra elongate, somewliat plane, nearly parallel, 



declivous at apex, covered with shallow, slightly cicatricose 



punctures closely set, and with the stride obhterated ; pygidium 



moderately closely punctate in the male, rugose in the female ; 



abdominal segments with one median row of setigerous punctures, 



Ijut the apical one is smooth in the centre in the male ; this segment 



is very rugose, and the others closely punctured, as well as having 



