A Monograph of the Formicidae of South Africa. 187 



2nd joint of petiole sub-globose, twice as wide as the 1st, Legs rela- 

 tively longer than in jiatalensis. 



ty major. 5 '8-6 mm. This differs from the $ minor not only in 

 its larger size, but also by the structure and sculpture of the head. 

 The anterior angles of the head are much more prominent. The clypeus 

 has the anterior margin produced into three distinct short teeth, 

 which are only indicated by slight prominences in the $ minor. The 

 frontal carinae are also wider anteriorly and longer. The mandibles 

 are strongly striated. The posterior half of the vertex is deeply and 

 transversely striated, the region in front of the eyes and below them 

 reticulate- striate, the frontal carinae longitudinally and rather finely 

 striate. The posterior ocelli of the $ minor are just distinguishable, . 

 whereas in this form they are barely represented by three shallow and 

 minute indentations. Otherwise like the $ minor. 



$ . 6S-7 mm. (hitherto undescribed). Head more parallel-sided 

 than in the £' , one-third longer than wide. The median portion of 

 the clypeus is produced further forwards and its anterior margin is 

 distinctly tridentate. The frontal carinae extend back almost to the 

 level of the anterior margin of the eyes. Three ocelli present. The 

 pronotum is narrower in front than behind, more convex above trans- 

 versely than in the £ . The mesonotum is wider than long ; on each 

 side of the middle line behind the pro-mesonotal suture there is a 

 short longitudinal impression, about one-third the length of the 

 segment. The head is distinctly rugose, obliquely so in front of the 

 eyes, and transversely and more strongly rugose behind them, but 

 the rugosities are not so coarse as in the $ major. Mesonotum very 

 finely rugulose and shining. Otherwise like the $ . 



Plumtree and Bembesi, S. Ehodesia, nesting in thin dead twigs of 

 Acacia. (S.A.M., R.M., G-.A. colls.) 



S. (Sub-genus Tetraponera), Emeryi Forel. ( = capensis, Emery, 

 nee. Smith, Forel emend.) 



Emery, Ann. Soc. Ent. France, vol. 63, p. 23, £ , 1895. Forel, Bull. 

 Soc. Vaud. Sc. Nat., vol. 47, p. 367, 1911. 



" This species is very shining, and the thorax and petiole are not at 

 all margined. The petiole is even narrower than in ambicjua. The 

 metanotum has a sti-ong transverse impression behind the suture. 

 The eyes are situated at about the middle of the sides of the head, a 

 little nearer the anterior than the posterior border; they are also 

 smaller, being less than one-third the length of the head ; in natalensis 



