500 Transactions South African P}iiloso]ohical Society, [vol. xii_ 



Elytra punctate and having each two moderately distinct 



dorsal striae besides the juxta-sutural one i:)leheius. 



a.^ Colour black or piceous black. 



Elytra with five fairly distinct strise on each side . . . . hilohiis. 



Elytra with only a juxta-sutural stria on each side . . . . ovampoianiis.. 



A}. Walls of the prothoracic cavity of the male sharply triangular 

 at tip. 

 a. Colour brick-red or piceous red. 



Head truncate and sub-carinate in front ; cephalic horn flat 



in front and not triangular behind ; elytra coriaceous . . . . rufulus. 



Head normal ; cephalic horn flat in front and triangular 



behind ; elytra sub-coriaceous zambesianiis^ 



(Fevialc.) 



Prothorax very closely punctured except for a narrow longi- 

 tudinal median space ; elytra with fine, somewhat distinct 

 strise incultus. 



Oephnus pugnax, Pering., 



Plate XXXYI., fig. 29. 



Trans. Entom. Soc. Lond., 1896, p. 159. 



Brick-red, glabrous, shining ; head of the male impunctate and 

 having at about the median part a nearly vertical horn flattened at 

 the base in front and triangular behind, this horn attains the height 

 of the anterior part of the vertical walls edging the deep excavation 

 on the median part of the prothorax which reaches nearly to the base ; 

 the walls edging this excavation are vertical, perpendicular in the 

 anterior part and very deeply sinuate at tip, the anterior angle of 

 the sinuation is triangular, the posterior, which is more raised 

 than the anterior, is slightly rounded, and from there the walls 

 slope towards the base for about one-third of the length, the sides 

 of the prothorax and of the walls have a few deep, scattered punc- 

 tures, but the excavation is impunctate ; scutellum more rounded 

 than ogival at tip, transversely impressed and impunctate ; elytra 

 short, convex, faintly striate only along the suture and set with 

 rough, nearly confluent, shallow sub-alveolate punctures. 



Female : Whole head distinctly punctate, on the vertex is a very 

 short but sharp triangular tubercle close to the base ; the prothorax 

 has a shallow transverse apical impression, but is otherwise simple, 

 and has a very distinct median longitudinal, broad but shallow furrow 

 extending from base to apex, and it is covered with somewhat closely 



