A Monograph of the Formicidae of South Africa. 583 



corners, straight in the middle. The scapes extend beyond the 

 occiput by almost half their length. Second joint of the flagellum 

 half as long as the 1st, one and a half times longer than wide. 

 Thorax bi-emarginate. The mesonotum is constricted in the middle 

 as in Acantholepis, forming in profile, a saddle-shaped depression. 

 Its anterior portion forms with the pronotum the usual convexity. 

 Its posterior portion, seen from the side, is cuneiform, almost acute 

 and almost sub-bidentate at the summit, descending in a slope 

 towards the deep meta-epinotal suture. The epinotum forms a 

 rounded and high boss, the dorsum convex and ascendant, the declivity 

 almost flat. Scale low, subrectangular, inclined forwards. Epinotum 

 and clypeus subopaque, finely but distinctly rugose transversely. The 

 rest of the body shining and almost smooth, except the abdomen 

 which is feebly shagreened. A few erect, coarse and yellowish hairs 

 on the head and abdomen. The rest without erect pilosity, but 

 clothed with a very fine and sparse pubescence. More or less dark 

 castaneous brown, tarsi and articulations yellowish. Antennae yellow- 

 ish brown. Legs brownish. 



5. 4" 7 mm. Head wider than long, the hind margin widely emar- 

 ginate. The scapes extend by two-fifths of their length beyond the 

 occiput. Declivity of the epinotum much longer than the dorsum. 

 Shape of the thorax ordinary, not recalling in any way that of 

 the ^. A few erect hairs on the thorax; pubescence fairly dense, 

 much more so than in the ^. Otherwise like the latter. Dealated. 



"Mountains of Natal. (R. C. Wroughton)." 



Some specimens in the S. A. Museum have been determined for 

 me by Dr. Santschi as being this species. They do not agree, how- 

 ever, entirely with the above description. The clypeus is as smooth 

 and shining as the rest of the head, not subopaque and rugose; the 

 colour of the body, femora and tibiae is dark brown, almost blackish 

 brown. 



The shape of the thorax in this species and the other species of 

 the sub-genus recalls that of Acantholepis, but differs in not having 

 a very noticeable suture between the meso- and metanotum. The 

 latter also has less prominent stigmatic tubercles than in Acantho- 

 lepis. In these specimens the ocelli are very small, visible only 

 under a high magnification. The meso-metanotum is as long as the 

 pronotum. The latter is half as wide again as long, very convex 

 transversely, fairly so longitudinally. The scale of the petiole is 

 two-thirds longer than it is wide above. 



King Williams Town), (Rev. R. Godfrey). (S.A.M., G.A. colls.) 



