A Monograph of the Formicidae of South Africa. 667 



ferruginous brown towards the apex, or sometimes ferruginous brown 

 all over. Legs dark ochreous, antennae reddish ochreous. A few 

 short yellowish pilose hairs on the clypeus, anterior corners of the 

 head, thorax, petiole and abdomen, but scanty everywhere. Legs 

 and antennae with a yellowish, sparse and short pubescence. Legs, 

 thorax and abdomen moderately shining, very finely and transversely 

 rugulose. Vertex and occipital third of the head reticulate-rugulose, 

 the rest of the head densely and rather sharply reticulate-punctate 

 and subopaque. The clypeus and upper part of the occiput with a 

 few elongate and shallow punctures. Head oblong, one-fourth longer 

 than wide, the sides subparallel, converging only very slightly in 

 front, the posterior margin straight or nearly so, the posterior angles 

 rectangular and narrowly rounded. The head is subtruncate behind, 

 Frontal carinae sinuate, widely divergent, as wide apart at the 

 posterior fourth as they are long; a well defined frontal sulcus 

 reaches back as far as ! the posterior ends of the carinae. Eyes 

 placed behind the middle, fairly large, hardly convex. The scapes 

 fall short of the hind margin by as much as their apical width. 

 Mandibles short, strongly convex externally, subopaque, finely striate 

 on the basal, and coarsely striato-punctate on the apical half, armed 

 with 5 broad and blunt teeth. Median area of clypeus subcarinate, 

 longer than wide, the lobe narrowed towards the extremity, deeply 

 and subangularly emarginate, the emargination at least half as deep 

 as it is wide, the edge of the emargination slightly raised all round. 

 The lateral pieces of the clypeus small and indistinct. Thorax not 

 unlike that of crepusculi, but the pronotum is only slightly convex 

 lengthwise, somewhat flattened transversely, the sides almost vertical 

 but nevertheless merging gradually into the upper face. The meta- 

 notum is distinct, the meta-epinotal suture more deeply impressed 

 than the other suture. Scale not much wider above than below, 

 flat behind, moderately convex in front, higher than the whole 

 petiole is long. Posterior tibiae cylindrical, not setose below. 



§ media, 7 mm. Head ferruginous, darkest behind. Mandibles 

 bright ferruginous, the masticatory margin black, with 6 teeth which 

 are more acute than in the %. Thorax, petiole, legs, antennae and 

 the basal half or thereabouts of the abdomen bright ochreous, the 

 apical half of the abdomen and the antennae yellowish brown. 

 Sculpture of the head like that of the % but more superficial. The 

 head is more narrowed in front than in the % and the sides are 

 moderately convex. The clypeus is only arcuately and shallowly 

 emarginate. Scapes longer, extending beyond the hind margin by 

 one-fourth of their length. Dorsum of epinotum longer, twice as 



