A Monograph of the Formicidae of South Africa. 465 



epinotum marginate at the sides, wider than long, moderately 

 excavated, shorter than the declivity ; epinotal spines divergent, 

 snbvertical, longer than their basal width, two-thirds as long as the 

 space between them. Dorsal face of 1st node nearly one and a-half 

 times wider than long, feebly emarginate in front. Second node 

 twice as wide as long, longer and less wide than in the type-species, 

 the sides produced into two fairly acute spines, strongly curved 

 backwards. 



£ . 2'4 mm. Blackish-brown or black, antennae, mandibles and 

 tarsi ferruginous, tibiae and femora dark brown, the articulations 

 reddish. Erect pilosity very scanty, the legs and antenna moderately 

 pubescent. Head and thorax densely reticulate-punctate and dull. 

 Nodes very superficially reticulate, legs and abdomen smooth and 

 shining. A few longitudinal striae on the cheeks and vertex. 

 Mandibles striate and sparsely punctate. Head as long as wide, the 

 sides convex, the posterior margin straight, the posterior angles 

 narrowly rounded. Clypeus carinate, the anterior margin straight. 

 Eyes convex, rather large, placed in the middle of the sides. Frontal 

 carinae slightly divergent posteriorly. Pro-mesonotum strongly convex 

 in all directions, the mesonotum with a transverse impression and a 

 tolerably distinct scutellum. Meso-epinotal suture deep. Dorsum of 

 epinotum one and a-half times longer than wide, flat. Epinotal 

 teeth subvertical, slightly divergent, acute, one-third as long as the 

 space between them. Dorsal edge of 1st node feebly emarginate ; 

 2nd node a little wider than long, the sides obtusely conical. 



Victoria Falls and Shiloh, S. Rhodesia. (S.A.M., E.M., G-.A. 

 colls.) 



P. Liengmei, Forel. (Plate VI, fig. 71.) 



Mitth. Schweiz. Ent. G-es., vol. 9, p. 93, $ , 1894. 

 Ann. Soc. Ent. Belg., vol. 57, p. 134, 1/, 1913. 



1/ . 7-8'5 mm. Of a veiy dark reddish-brown, the abdomen blackish- 

 brown, legs and antennae ferruginous. Head, thorax and basal third 

 of abdomen dull, the rest of the abdomen and the legs smooth and 

 shining. Pilosity reddish-yellow, fairly sparse, the pubescence also 

 sparse. Head strongly rugoso-striate ; the striae are longitudinal 

 on the anterior half or three-fifths but divergent posteriorly. On the 

 posterior half or two-fifths the striae are much more oblique or almost 

 transverse, and also closer and finer. The spaces between the striae 

 closely and finely reticulate. Thorax and nodes reticulate-punctate, 

 less closely on the sides and on the dorsum of the epinotum than on 



