A Monograph of the Formicidae of South Africa. 98 



$ . 9 - 5 mm. Mandibles very wide at the base, attenuating 

 abruptly to the apex, and curved inwardly. Clypeus broad and 

 carinate, with a short and rounded lobe anteriorly. Head one and 

 a half times longer than wide, narrowed behind the eyes and raised 

 collar-like at the articular margin. The pronotum extends consider- 

 ably in front of the mesonotum (i.e., not depressed below the latter). 

 Mesonotum with two deep convergent furrows ; it is feebly convex 

 in front and behind. Seen from the side, the node of the petiole forms 

 almost an equilateral triangle, obtuse and rounded above. Sculp- 

 ture, pilosity and colour as in the £ , but the head is smoother and 

 the metanotum (epinotum) more hairy. Wings with a slight rusty 

 tinge. Bourka, South Africa." 



I have met with this species only in Natal, where it appears to 

 feed exclusively on woodlice ; the entrance to the nest can be plainly 

 distinguished by the accumulation of the remains of their prey, 

 bleached a dead white, scattered around it. The nest is not in- 

 dicated by any mound or other accumulation of earth ; but in the 

 neighbourhood of Durban at least, it is very frequently found in, or 

 immediately adjacent to the nests of Myrmicaria eumenoides, Gerst. 

 I am inclined to think that this Leptogenys dispossesses the latter 

 species of a part of their large nest, rather than take the trouble of 

 excavating one for itself. It also has a very noticeable smell, 

 resembling essence of pears. (S.A.M., E.M., G.A. colls.) 



L. Schwabi, Forel. 

 Deutscb. Ent. Zeitschr. Beiheft, p. 208, $ , 1913. 



$ . 9 - 6 mm. Very similar to Stuhlmanni. Black, mandibles, 

 flagellum, extreme base and apex of scape, the tarsi and apex of 

 abdomen more or less ferruginous, the clypeus, tibiae and femora 

 piceous. Whole body very smooth and shining, sparsely covered 

 with long yellowish or golden hairs, which arise from very small 

 punctures. Puncturation otherwise wanting. Pubescence entirely 

 absent. The mesonotum is transversely and shallowly strigose 

 above, obliquely so at the sides ; the epinotum is also transversely 

 strigose above, but more strongly so than the mesonotum, especially 

 over the brow of the declivity. The sides of the epinotum obliquely 

 striated. 



Head a little longer than it is wide in front, much wider in front 

 than behind, but at the anterior margin it is not wider than across 

 the eyes. The latter large, situated a little in front of the middle of 

 the sides. Clypeus like that of Stuhlmanni, but the apex not pro- 



