726 Annals of the South African Museum. 



pubescence is exceedingly fine, short and scanty, except on the lower 

 part of the sides of the thorax and on the coxae where it is long, 

 adjacent and silky. Legs with longer and more abundant pubescence 

 than the dorsum of the thorax. Pilosity on the margins of the 

 abdominal segments whitish, very short and thin, yellowish and much 

 longer on the declivity and scale. Head as long as wide, nearly 

 twice as wide at its widest point (posterior third) as at the anterior 

 margin, the sides fairly convex, the posterior margin straight. Median 

 area of clypeus oblong, a little longer than wide, the anterior margin 

 straight. Frontal carinae as long as their greatest distance apart. 

 The scapes extend beyond the hind margin by twice their apical 

 width. Eyes placed at the posterior third. Mandibles sbagreened, 

 subopaque, strongly punctured, 6-dentate. Pronotum twice as wide 

 as long, the shoulders subangular. Mesonotum one and a half times 

 wider than long, transversely oval. Both sutures strong. Epinotum 

 somewhat compressed, but with a distinct dorsal face which lies at a 

 lower level than the mesonotum and is horizontal lengthwise, at least 

 over its basal half. It joins the longer and sub vertical declivity in a 

 rapid curve, or (even in examples from the same nest) sub- 

 rectangularly. The declivity is feebly concave from above to below. 

 Scale subovate, widest below the middle, the edge fairly trenchant, 

 the anterior face feebly convex, the posterior face flat. Abdomen 

 globose, a little longer than wide. Tibiae cylindrical, not setose 

 below. 



$ minor, 4'2-5*3 mm. Head one-seventh longer than wide, widest 

 across the eyes, and not more than one-third wider there than at the 

 anterior margin ; the posterior margin moderately convex. Head 

 without the large punctures present in the 2J.. Clypeus wider than 

 long, subcarinate, the anterior margin moderately convex. The 

 scapes extend beyond the hind margin by about one-fourth of their 

 length. In the smallest £ $ the disc of the pronotum is rather flattened. 

 The epinotum is more distinctly compressed, so that the posterior half 

 of the dorsum is sharply cristate and linear when seen from above. 

 Otherwise like the 2J. . 



$, 10 mm. (hitherto undescribed). Colour, sculpture, pilosity and 

 pubescence as in the 2J., but the thorax is darker as a rule, more 

 brownish red. The mesonotum and scutellum are also very shallowly 

 and sparsely punctured in addition to the fundamental sculpture. 

 Head subquadrate, not much narrower in front than behind, the 

 posterior margin feebly convex, the sides less convex than in the 

 2J.. Abdomen transversely reticulate-rugulose and feebly shining, (in 



