622 Annals of the South African Museum. 



delimited from the much longer and oblique dorsum. Scale of petiole 

 twice as high as thick (from front to hack), convex above from side 

 to side, the edge trenchant, the anterior face convex, the posterior 

 face almost flat. Femora and tibiae compressed, oblong in cross- 

 section, hardly prismatic. 



Q media, 9-10 mm. Head dark brown, thorax reddish pale brown, 

 darkening posteriorly, abdomen black with the pale spots obsolete or 

 nearly so, lower part of the sides of the thorax, the scale and the 

 legs ochreous, the posterior tibiae and tarsi somewhat brownish but 

 not dark brown as in the %. 



Head about one-fourth longer than wide, widest across the eyes, 

 which are relatively larger than in the 9j. and placed just behind 

 the middle; the sides of the head moderately convex, the posterior 

 margin very little wider than the anterior and less concave than in 

 the 2f, the posterior angles widely rounded. The scape extends beyond 

 the hind margin by about one-third of its length. The pronotum 

 is flatter than in the 2|, and the scale is thicker and more convex 

 vertically in front. Otherwise like the Q[. 



^ minor, 7*7-8*2 mm. Head, antennae and thorax dirty yellowish 

 brown, the pronotum somewhat paler. Abdomen brownish, with the 

 ochreous spots on the 1st segment elongate, confluent and very indis- 

 tinctly defined. Legs ochreous, tibiae and tarsi somewhat reddish. Head 

 nearly one and a half times longer than wide, the sides in front of 

 the eyes straight and parallel, behind the eyes convex and convergent, 

 the posterior margin shallowly concave and much narrower than the 

 anterior, the posterior angles less rounded than in the § media. The 

 scapes extend by half their length beyond the hind margin. Eyes 

 more convex than in the ^ media. The convexity of the thorax 

 lower than in the Qj. or ^ media. Scale more convex in front than 

 in the ^ media. The projecting lobe of the clypeus is relatively 

 wider and shorter than in the ^ media, and its anterior margin is 

 convex, not straight as in the Qj. and ^ media. 



9, 14.5 mm. Length of front wing 13 mm. Colour, pubescence, 

 pilosity and sculpture like that of the Q)., but the blackish brown 

 colour of the thorax is more sharply delimited from the ochreous 

 colour which extends over the whole of the sides of the thorax and 

 the declivity of the epinotum ; the pronotum ochreous at the sides. 

 In addition, the head is paler or reddish brown at the sides and 

 posterior angles, and the abdominal spots are wider, much more 



