A Monograph of the Formicidae of South Africa. 719 



rugulose above and behind. Pro-mesonotum and abdomen finely 

 and transversely rugnlose. Dorsum of epinotum more strongly 

 rugulose, almost undulate-striolate. The mandibles and anterior 

 half of the head also sparsely and sharply punctured, the punctures 

 small. Pro-mesonotum and abdomen with a few large and shallow 

 piligerous punctures. Pilosity yellowish, long, erect and fairly 

 coarse, scanty on the head, fairly abundant elsewhere, somewhat 

 oblique and shorter on the apical half of the abdomen. Pubescence 

 decumbent and very sparse, a little longer on the legs than elsewhere. 

 Head subquadrate, as long as wide, slightly narrowed in front, but as 

 wide at the anterior third as at the posterior margin, the sides feebly 

 convex in the smaller 2|, straight over the posterior two-thirds in the 

 larger, the posterior margin widely and rather deeply emarginate. 

 Mandibles shining, 6-dentate, robust and fairly convex externally. 

 Median area of clypeus flat, subquadrate, a little longer than wide, 

 with a very short anterior lobe the margin of which is straight. 

 Frontal carinae sinuate, as wide apart in the middle as they are long. 

 The scapes reach the hind margin. Eyes feebly convex, placed at 

 the posterior third. Pronotum twice as wide as long, the sides 

 strongly convex, feebly convex above. Mesonotum transversely 

 oval or subcircular, a little wider than long. Pro-mesonotal suture 

 well defined, the meso-epinotal suture deep. Dorsum of epinotum 

 rectangular, a little wider than long in the smaller 2J., two-thirds wider 

 than long in the largest 21. , sloping slightly downwards behind, obtusely 

 margined at the basal half of the sides ; declivity vertical, twice as 

 long as the dorsum, its junction with the latter rectangular, feebly 

 rounded at the apex of the angle (when seen in profile). Scale of 

 petiole thin, oval, the dorsal edge trenchant, feebly convex in front, 

 flat behind. Tibiae feebly compressed, with a few setae below near 

 the apex. 



£ minor, 4*8-7 mm. Posterior margin of the head straight, the 

 sides more convex than in the 2[ and more narrowed in front. The 

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

 length. The larger specimens (6-7 mm.) hardly form a distinct 

 £ media caste ; they have the posterior margin of the head feebly 

 concave and the scapes a little shorter than in the smaller ^ $. Other- 

 wise like the 2J. . 



$, 12-2 mm. (hitherto undescribed). Colour and sculpture as in the 

 2J. . The pilosity on the abdomen is shorter, oblique and less abundant, 

 limited to the apical margins of the segments. Head subquadrate, 

 as long as wide behind, barely one-third wider behind than in front, 



