126 Annals of the South African Museum. 



anterior third of the head, the vertical anterior face of the pronotum, 

 the mesopleura, the petiole and the epinotum, which are duller, 

 owing to a rugulosity of the surface which is almost microscopic on 

 the head, but somewhat stronger on the other parts. Head sparsely 

 punctured, with small, discrete and shallow punctures ; scape of 

 antenna more coarsely punctured. Pro- and mesonotum sparsely, 

 but much more coarsely punctured than the head. Epinotum and 

 petiole very shallowly and more closely punctured, the punctures 

 being smaller than on the pronotum. Abdomen finely and sparsely 

 punctured. A short, yellow pubescent hair is inserted in each 

 puncture, those on the head being very fine. 



Head very slightly narrowed posteriorly, the sides are almost 

 parallel, posterior margin shallowly arcuate. Mandibles sub- 

 nitidulous, striato-punctate, the apex sub-acute, the pre-apical tooth 

 small and blunt, the sub-apical very obtuse or represented only by a 

 swelling on the margin. The frontal carinae are considerably raised, 

 divergent and vertical in front, and project distinctly over the very 

 short clypeus ; they are angularly bent just above the antennal 

 sockets, so that their posterior half is horizontal. Between them 

 posteriorly is a very smooth and shining oval area, which is con- 

 tinued into a moderately deep groove with rounded margins which 

 becomes very faint on the vertex, and again deepens towards the 

 occipital margin. The frontal carinae are not spinously produced 

 backwards as in helvolus and affinis. Antennae 11-jointed; the 

 scape is strongly incrassate towards the apex, and not longer than 

 the first 7 joints of the flagellum. The 1st joint of the fiagellum 

 very short and about as long as wide, all the other joints except the 

 apical much wider than long ; all the joints closely punctured and 

 densely pubescent beneath. Prothorax narrowed and depressed 

 anteriorly to form a short neck ; it is widest behind this part and 

 narrows towards the mesonotum, from which it is separated by a 

 distinct and angular suture. The mesonotum widens posteriorly, where 

 it is two-thirds wider than long. The epinotum is widest at its base 

 (on each side of which lies a prominent stigmatic orifice), and narrows 

 but slightly towards the short and vertical declivity; the brow of the 

 latter is considerably rounded above and at the corners. The dorsum 

 of the epinotum has a longitudinal median impression. Seen from 

 the side, the dorsum of the whole thorax is flat and rather distinctly 

 delimited from the sides, which are vertical or nearly so. The node 

 of the petiole is almost sub-quadrate, or a little wider behind than in 

 front, as long as, or only very little longer than wide, all the angles 

 strongly rounded ; the ventral lamella is produced into a triangular 



