A Monograph of the Formicidae of South Africa. 313 



a few transverse striae between the spines. The two nodes trans- 

 versely striate above, smooth below. There are some long reddish 

 hairs round the mouth and below it, and on the coxae and the ventral 

 surface of the abdomen. Tarsi and antennae furnished with shorter 

 hairs, which are fairly oblique and abundant. A very fine, short, and 

 very sparse pubescence present all over, but more distinct on the 

 abdomen. Head quadrate, angles rounded, sides nearly straight, 

 a little narrower in front, the vertex fairly gibbous. Frontal carinae 

 very divergent, reaching back as far as the middle of the head, and 

 forming only a short demiscrobe for the basal third of the scape. 

 Eyes one-fourth the length of the sides of the head, placed in the 

 middle, the margin angular below. Mandibles smooth, with a few 

 striae near their masticatory margin, feebly and sparsely punctate, 

 armed with 6 rather short teeth. Clypeus only slightly convex, the 

 anterior margin nearly straight. The scape extends back nearly to 

 the vertex, 2nd-8th joints of the flagellum nearly as long as wide- 

 Anterior portion of the pronotum flat, transversely margined, the 

 shoulders forming prominent and acute angles. The rest of the 

 pronotum forms an even convexity with the mesonotum (segment of 

 a sphere). Meso-epinotal suture feebly indicated. Dorsum of the epi- 

 notum horizontal in profile, convex transversely, not margined. Spines 

 stout, as long as two-thirds of the dorsum of the epinotum, fairly high 

 and divergent. Declivity concave, with a triangular tubercle in the 

 lower part, and a lamelliform expansion on each side of the articulation 

 with the petiole. First node squamiform, as wide as the middle of 

 the thorax, much wider than high, trapezoidal, the upper margin 

 narrower, the lateral margins compressed, obliqiie below ; the posterior 

 face convex, especially in its upper half, which appears horizontal in 

 profile ; the anterior face slightly concave from above to below, and 

 convex from side to side. The peduncle is as long as the scale is 

 high, and bears a very small tooth below at its base. Second node 

 wider than the 1st, lower, three and a half times wider than long, 

 convex above, the sides sharply marginate, trenchant, and arcuate, 

 transverse in front and slightly convex behind. Below it bears a 

 fairly thick and transverse appendage. Abdomen a little more than 

 one-quarter wider than the 2nd node, truncate at the base." 

 Cape of Grood Hope. 



Var. hopensis, Forel. (Plate VII, figs. 103, 103a, 1036.) 

 Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 223, £ , $ , 1914. 

 " $> . 49 mm. Differs from the type of the species by the 



