516 Annals of the South African Museum. 



but much more convex, forming an even and strong convexity raised 

 much above the level of the dorsum of the epinotum. The head is a 

 little narrower, more rounded, and the eyes are a little smaller. The 

 abdomen is entirely shining and nearly smooth (densely reticulate and 

 more or less subopaque on the 1st segment in the type of the species). 

 Rusty red ; posterior half of abdomen, and sometimes also the head 

 and antennae brown. Otherwise quite like the type, particularly in 

 the sculpture, the petiole and mesonotal carina. C. opaciceps is closely 

 allied to capensis, Mayr, from which it hardly differs except in the 

 sculpture, which is clearly reticulate-punctate (in capensis more 

 striato-rugose). 



" Transvaal, in Acacia horrida (Dr. C. Keller)." 



C. solees, Forel. 



Schultze, Reise Siid-Afrika, vol. 4, p. 7, £, 1910. 



" ^ • ^ mm. Mandibles striate. Anterior margin of clypeus 

 straight. Head quadrate, as long as wide, feebly concave behind, the 

 sides convex. Eyes flat, placed barely behind the middle. The scape 

 hardly reaches the posterior margin of the head ; club 3-jointed ; the 

 middle joints of the flagellum as wide as long. Pro-mesonotum much 

 longer than wide, evenly arched or convex on all sides, not wide in 

 front. When viewed from in front there can be seen a fairly sharply 

 denned, arcuate marginal line on the sides and the front of the pro- 

 notum. Disc of mesonotum rounded, as long as wide, without a 

 median carinula, not marginate at the sides. Thoracic emargination 

 (=meso-epinotal suture ?) sharp, steep, fairly deep, not wide. Epino- 

 tum with 2 broad triangular teeth, which are hardly longer than their 

 basal width. First segment of petiole trapezoidal, shorter than 

 wide in front, the anterior margin straight, with rounded anterior 

 angles. Its sides are deeply arcuate-emarginate, so that it presents 

 wide anterior and narrow posterior halves. Second segment much 

 wider than long, divided by a deep median groove into 2 discs. 

 Abdomen of the usual form. The 1st segment of the petiole bears a 

 tooth below. Head very nearly smooth, very finely and sparsely 

 punctured. Clypeus, cheeks and thorax, excepting the smooth 

 declivity of the epinotum and the sides of the pronotum, finely and 

 irregularly rugose lengthwise. Abdomen very finely and superficially 

 coriaceous-rugulose, the petiole somewhat more sharply so. Sparsely 

 pubescent all over, the hairs yellowish and decumbent. Pilose hairs 

 absent except on the clypeus, the apex and ventral sui'face of the 



