A Monograph of the Formicidae of South Africa. 239 



Smooth and shining. Head and thorax very sparsely and finely 

 punctured. Head about one-fifth longer than wide, the sides almost 

 parallel. Antennae 11-jointed, the scape extending a little beyond the 

 posterior fifth of the head ; 3rd-7th joints of flagellum one and a half 

 times wider than long ; the 8th and 9th as wide as long. Clypeus 

 distinctly bicarinate. The eyes small, set within the anterior half of 

 the head. Mandibles shining, with a few large punctures, tridentate. 

 The thorax is fairly strongly constricted at the meso-epinotal suture ; 

 the pro-mesonotum is twice as long as the epinotum. The dorsum of 

 the latter one-third longer than the declivity, which is oblique and 

 passes into the dorsum by a low curve. The dorsal profile of the pro- 

 mesonotum is not very convex. The 1st node of the petiole cuneiform, 

 about as wide as long, the apex rounded, the peduncle half as long as 

 the node. The 2nd node is about as wide as long, or a little wider, 

 wider in front than behind, reversed trapeziform. 



Dr. Forel distinguishes this form from the type by the more convex 

 sides of the head, the shorter nodes and the wider 2nd node, which is 

 " much wider than long (as long as wide in the type)." The latter 

 feature is not appreciable by measurement in the specimens which I 

 have before me. 



Bulawayo. (G-.A. coll.) 



M. (sub-genus Mitara) atomus, Forel, race mictilis, Forel. 

 (Eace) Zool. Jahrb. Syst., vol. 29, p. 252, £ , ? , 1910. 



^ . 1'5 mm. Pale ochreous, the sides and apical margins of the 

 abdominal segments slightly brownish. Smooth and shining. Head 

 and thorax very sparsely and finely punctured. Head very sparsely 

 pubescent, and with the rest of the body, also very sparsely pilose. 

 Head, excluding the mandibles, nearly one-sixth longer than wide, 

 the sides moderately convex. Mandibles rather long, shining, coarsely 

 and sparsely punctured, with 3 or 4 teeth. The clypeus produced a 

 little forwards ; the median area bicarinate, slightly concave between 

 the carinae, the anterior margin feebly sinuate. Eyes not very small, 

 placed a little in front of the middle of the sides. Antennae 

 11-jointed, the scape extending back as far as the posterior fourth of 

 the head, the club distinctly longer than the rest of the flagellum ; 1st 

 joint of flagellum as long as the four following joints taken together, 

 3rd-6th joints twice as wide as long. Thorax not strongly constricted 

 at the meso-epinotal suture. The 1st node of the petiole is only a 

 little higher than the 2nd, narrower and longer than that of exiguum, 

 bvlaivayense, and longer than wide. The 2nd node subglobose, the 



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