196 Annals of the South African Museum. 



head and thorax being dark reddish brown, and the abdomen black. 

 Pubescent hairs on the flagellum and tarsi, the rest of the body 

 clothed somewhat irregularly and sparsely with long, semi-erect, pale 

 hairs, which are oblique and rather more abundant on the legs. The 

 inner margins of the mandibles with a row of long curved hairs, 

 curving upwards over the clypeus. The ventral surface of the head 

 behind the mentum, with a row of long hairs curving forwards under 

 the mouth. 



Head as wide as long, measured from apex of clypeus to the 

 occipital margin. Clypeus moderately convex transversely, and pro- 

 jecting a little over the mandibles ; the anterior margin semi-circularly 

 excised in the middle, the excision bounded by a slight tooth on each 

 side. Mandibles elongate, nitidulous, strongly striate longitudinally, 

 armed with 5 large teeth. Eyes strongly convex, placed somewhat 

 dorsally at about the middle of the sides. Frontal carinae large, 

 raised in front, divergent behind ; the frontal area triangular and 

 well denned. Scape long, extending back a little beyond the occipital 

 margin, flagellum slightly thickened towards the apex, all the joints 

 longer than wide, the 1st joint as long as the 2nd and 3rd together. 

 The clypeus is evenly and longitudinally striate, the rest of the head 

 strongly striate, the direction of the striae rather variable. Usually 

 the median portion of the vertex is longitudinally striate from the 

 frontal carinae back towards the occiput, and on each side of the 

 median area the striae become more and more oblique posteriorly, 

 curving back to the eyes. The thoracic sutures are only slightly 

 indicated at the sides, quite obsolete above. The anterior portion of 

 the thorax is convex in front and at the sides, the median portion 

 depressed, the posterior or epinotal region straight or slightly convex. 

 The prothorax is concentrically striate, the meso- and epinotum trans- 

 versely striate above, obliquely and longitudinally striate at the sides. 

 The striae on the meso- and epinotum are larger and deeper than those 

 on the head and prothorax. The dorsum of the epinotum is half as 

 long again as the declivity. The peduncle of the first joint of the 

 petiole is quite half the length of the joint ; the node is distinctly 

 wider than long, very convex above. The peduncle and node are 

 transversely striate, the node feebly so. The 2nd joint of the petiole 

 is as long as wide, more or less campaniform, not so convex above as 

 the 1st node. Abdomen narrow, twice as long as wide, the 1st 

 segment with a slight neck-like constriction at the base, and four and 

 a half times longer than the remaining segments taken together. 

 There are a few very faint transverse striae near the basal half of the 

 1st segment. Legs very long and slender. 



