644 Annals of the South African Museum. 



Race Thales, Forel. 



Ann. Soc. Ent. Belg. Vol. 54, p. 453, % g, $, tf. 1910. 



QJ-, 9-11 mm. Head black, thorax, abdomen, legs and flagellurn 

 reddish brown, the first two segments of the abdomen paler than 

 the others. Shining, the abdomen more so than the rest of the 

 body. The fundamental sculpture like than of maculatus i. sp. but 

 more superficial, the head and thorax with a -sparse piligerous 

 puncturation in addition. Pilosity yellowish, sparse all over, the 

 sides of the head without exserted hairs. Pubescence very fine, 

 adjacent, almost absent from the body. Head as long as, or a little 

 longer than wide, trapezoidal, not much narrowed in front, the 

 middle half of the sides straight, the anterior and posterior fourth 

 feebly convex, the posterior margin moderately concave. The poste- 

 rior angles very narrowly rounded, subrectangular, projecting slightly 

 backwards. Clypeus obtusely carinate. Mandibles shining, strongly 

 punctured, 7-dentate. Scapes barely reaching beyond the occipital 

 margin; frontal carinae divergent behind; eyes placed at about the 

 middle of the sides. Thorax short and robust, the mesonotum a 

 little wider than long, (longer than wide in the type of the species). 

 The metanotum is almost or quite obsolete. The epinotum is 

 strongly compressed from side to side, leaving a very narrow dor- 

 sum, narrower than in maculatus i. sp., very oblique, about twice as 

 long as the declivity and joining the same in a curve. Scale of 

 petiole low, not much higher than wide, the dorsal edge rather thick, 

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

 compressed and finely setose below. 



§ minor, 5'5-7 mm. Dark reddish brown, the anterior half of the 

 head somewhat paler. Head quadrate, barely longer than wide, the 

 sides and posterior margin straight, the posterior angles rounded. 

 The scape extends beyond the occipital margin by two-fifths of its 

 length. Scale of petiole subcuboid, with a distinct dorsal face which 

 curves downwards in front; seen from above, the dorsal face is about 

 one and a half times wider than long. Otherwise like the D\. 



"9, 11-115 mm. Like the Qj.. Wings faintly tinged with rusty- 

 red, nervures of the same colour. Thorax wider than the head. 

 Scale wide, thick, subcuboid, having at the summit an almost flat 

 or obtusely convex face. The scapes extend beyond the occiput by 

 as much as their apical width. 



cf, 7 mm. Head convex behind, wide. Mandibles wide. Scale 



