A Monograph of the Formicidae of South Africa. 287 



reticulate-rugose. The demi-scrobes are fairly wide but not deep, 

 very finely reticulate-punctate. The clypeus has a strong median 

 carina and one or two finer lines on each side. The pro-mesonotum is 

 almost smooth and impunctate. Dorsum of epinotum very shallowly 

 reticulate, the sides of the thorax reticulate-punctate. Nodes of the 

 petiole very finely and superficially punctate on their posterior faces, 

 otherwise smooth. Abdomen smooth and shining. Head a little 

 longer than wide, the sides feebly convex, the posterior margin 

 shallowly concave, the^posterior angles rounded. The scapes are thin 

 and long, extending beyond the hind margin of the head by a length 

 about eaual to their apical width. Flagellum long, rather thin in its 

 basal half, the 9th and 10th joints quite half as long again as wide, 

 the 1st joint as long as the three following joints taken together, the 

 2nd joint half as long again as wide, the 3rd-8th joints at least as 

 long as wide. Mandibles triangular, finely striate, pubescent, with 

 three acute teeth in front. Clypeus convex, the frontal area depressed 

 and well defined. Frontal carinae long, extending back almost to the 

 occiput. Below them there is a smooth and shallow demiscrobe. 

 Eyes fairly large and' convex, placed a little in front of the middle. 

 Thorax narrow, twice as long as it is wide across the shoulders of 

 the pronotum ; the dorsal profile slopes downwards from front to back. 

 The pronotum has a very short declivous anterior face above the neck, 

 and is moderately convex transversely. The dorsum of the epinotum 

 is twice as long as it is wide at the base ; epinotal spines acute, 

 slightly divergent, as long as the interval between their bases ; the 

 declivity is oblique and shorter than the dorsum. The episternal 

 teeth are reduced to two rounded angles. The peduncle of the 1st 

 segment of the petiole is as long as the node ; the latter, seen from 

 the side, is cuneiform or subsquamiform, with a short and vertical 

 anterior face and a longer posterior-dorsal face, which, seen from 

 above, is hexagonal in outline. Second node wider than the 1st, its 

 sides distinctly angular in the middle. Abdomen subglobose. 



A very distinct species, easily recognised by the smooth pro- 

 mesonotum, the demi-scrobe, and the shape of the petiole. 



Pietermaritzburg (Weitzaecker) ; Port Elizabeth (Dr. H. Brauns). 



T. setigerum, Mayr. 



Ann. K.K.N.H. Mus. Wien, vol. 16, p. 22, £, 1901. 



Forel, Ann. Soc. Ent. Belg., vol. 54, p. 424, $ , £, 1910. 



" ^ . 3 - 3 mm. Yellowish-red-brown, the upper surface of the 

 head and abdomen darker, the mandibles, antennae, and legs more 



19 



