A Monograph of the Formicidae of South Africa. 653 



the hind margin by quite one-third of their length and as far as 

 the pro-mesonotal suture. Pronotum very little wider than long in 

 the middle. In profile, the dorsum of the thorax does not form a 

 continuous curve, as the mesonotum is more convex and raised 

 somewhat abruptly above the level of the hind margin of the pro- 

 notum. Metanotum very small, barely defined posteriorly. Dorsum 

 of the epinotum oblique, rounded above from side to side, a little 

 longer than the oblique declivity. Convexity of thorax, L. = 3.^ H. ; 

 highest at the anterior third of the mesonotum. Scale of petiole 

 higher than long, about two-thirds higher than wide above, the 

 anterior face moderately convex, the posterior face flat. Tibiae com- 

 pressed, the sides flat, the upper and lower surfaces rounded, sparsely 

 setose on the lower margin. 



§ media. 155 mm. Head one-third longer than wide, the sides 

 nearly straight, convex and convergent only over the anterior and 

 posterior sixths, hardly narrowed in front, the posterior margin 

 moderately concave, the posterior angles narrowly rounded. The 

 scape " extends beyond the hind margin of the head by more than 

 one-third of its length. Pronotum as long in the middle as wide. 

 Dorsum of epinotum about twice as long as the declivity. Scale of 

 petiole thicker and more convex in front than in the 9|. Pilosity a 

 little less abundant on the abdomen. Puncturation of the head 

 weaker. Otherwise like the %. 



§ minor, 9-13 mm. In the smallest of these, the head behind 

 the eyes is almost trapezoidal, the width just behind the eyes being 

 three times the width of the occipital margin, the latter straight. 

 In front of the eyes the sides are parallel, the head not wider 

 across the clypeus than across the eyes. With increase in size, the 

 sides become correspondingly more convex, and the width greater, 

 so that in specimens 13 mm. long, the width of the posterior margin 

 is much more than half the width of the head just behind the eyes, 

 but still less than the width across the clypeus. The latter is only 

 arcuately produced in the smallest § §, and the carina is almost 

 obsolete. The convexity of the thorax is much less than in the Qj., 

 L. = 4^ II. The scale of the petiole is much thicker, seen from 

 the side subconical, the two faces equally convex. Otherwise like 

 the y media. 



9, 19 mm. Colour and sculpture of the head as in the £. Pilosity 

 shorter and less abundant. The mesonotum slightly glossy. The 

 scutellum, metanotum, petiole and abdomen moderately shining. 



