664 Annals of the South African Museum. 



£ minor, 3'5-& mm. Pilosity, pubescence and colour like that of 

 the Qj., but the colour is a little paler, the margins of the abdominal 

 segments translucent and flavous, legs pale straw-yellow. Sculpture 

 exceedingly superficial, almost obsolete, the clypeus and cheeks as 

 smooth as the rest of the head. Head not quite one-third longer 

 than wide across the eyes, the sides in front of the eyes straight 

 and feebly convergent anteriorly, behind the eyes convex, posterior 

 margin also convex. Eyes convex and large, placed behind the 

 middle, occupying one-third of the sides of the head. Clypeus sub- 

 carinate, its anterior margin arcuate. Mandibles less convex exter- 

 nally than in the %. The scapes extend beyond the hind margin 

 by a little more than one-fourth of their length. Pronotum convex 

 transversely, not flattened above lengthwise ; mesonotum not much 

 narrower behind than in front. Dorsum of epinotum not cristate, 

 longer than the declivity and much longer than wide. Scale of 

 petiole convex on both faces, thicker than in the %. Tibiae cylin- 

 drical, not setose below. 



Q, 8*5 mm. Black or brownish black, the mandibles and anterior 

 margin of the head dark reddish brown, the apical margins of the 

 abdominal segments testaceous. Legs more less ochreous, antennae 

 yellowish brown. Sculpture and pilosity as in the %. Head like 

 that of the 91-, but the lobe of the clypeus is shorter, more shallowly 

 emarginate, the tubercles less pronounced. In the single specimen 

 before me, the mandibles have 5 teeth as in the %, not 6 as stated 

 by Emery. Ocelli small. A narrow area of the pronotum is visible 

 from above, both in front and at the sides. Mesonotum slightly 

 convex in front only. Metanotum well defined. Dorsum of epinotum 

 horizontal, much wider than long, merging by a short curve into 

 the much longer and subvertical declivity. Scale a little thicker 

 than in the %. Abdomen oblong, parallel-sided. Wings hyaline, 

 nervures and stigma ochreous. 



cf, 4 mm. Black, scapes and tarsi dark brown, flagellum brown. 

 Shining, microscopically rugulose, the mesonotum also with a few 

 small and shallow punctures. Pilosity yellowish, thin and long, 

 sparse on the head and thorax, fairly plentiful on the abdomen. 

 The eyes occupy the middle third of the sides of the head. Clypeus 

 gibbous or subcarinate in the middle, its anterior margin feebly 

 concave. Masticatory margins of the mandibles oblique and edentate. 

 Scapes fairly long, extending beyond the hind margin by half their 

 length ; 1st joint of flagellum widened apically or pyriform. Scutel- 

 lum not much higher than the dorsum of the epinotum. Scale of 



