104 Annals of the South African Museum. 



end to end, except the occipital surface, the cheeks and antennal 

 hollows which are smooth and shining. Thorax dull, closely reticu- 

 late-punctate, intermixed with some larger rugae, which are more or 

 less longitudinal on the pronotum, and transverse on the mesonotum ; 

 abdomen and petiole smooth and shining, legs finely and closely 

 punctured. Head a trifle longer than wide, widest across the eyes, 

 widely excised behind, occipital portion not contracted ; the sides in 

 front of and behind the eyes moderately concave. The antennal 

 hollows are wide and bounded anteriorly and externally by a broad 

 rounded ridge. Clypeus smooth and shining, extending back between 

 the frontal carinae in a narrow elongate triangle ; anteriorly the 

 clypeus is bilobed and concave dorso-ventrally. Mandibles a little 

 more than half as long as the head, internal margins unarmed, 

 ending in three teeth, the sub-apical shortest and arising from the 

 apical. Eyes large. The scape is widest near the middle, and 

 extends back a little beyond the occipital margin ; the flagellum 

 moderately thickened towards the apex. The pronotum is as long 

 as wide, widest in the middle and twice as wide behind as in front. 

 Mesonotum short, wider than long. Pro-meso- and meso-metanotal 

 sutures well defined. Epinotum as long as pro- and mesonotum 

 together, with two distinct broad teeth at the apex of the dorsum ; 

 declivity vertical, convex and more finely sculptured than the 

 dorsum. The node of the petiole is squamiform, higher than 

 wide, vertical behind and in front ; ventral lamella produced into 

 a large oblong piece pointing forwards. The upper surface of the 

 node is almost linear and slightly excised in the middle (this can be 

 seen more clearly if it is viewed from the front). First and 2nd 

 segments of the abdomen sub-equal, with no distinct constriction 

 between them. 



5 (hitherto undescribed). 6 mm. Very similar to the worker, 

 except the usual sexual differences. The pronotum is wider than in 

 the £ and wider than long; the mesonotum is nearly as long as the 

 pronotum, wider than long, finely and longitudinally striate ; the 

 scutellum is small. Dorsum of epinotum shorter than in the £ 

 Wings pale brownish yellow, stigma and nervures pale brown. 

 Other characters as in the £ . 



$ (hitherto undescribed). 6-5 mm. Moderately shining. Pale 

 brownish yellow, head dark brown, scutellum and base of epinotum 

 pale brown, mesonotum with a Y-shaped brownish area. Covered 

 with a rather dense pilosity, composed of short stiff dark hairs on 

 the mesonotum, of longer and paler hairs elsewhere. Legs and 

 antennae clothed with a dense pubescence, somewhat erect on the 



