346 Annals of the South African Museum. 



sides, slightly narrowed between the pro- and mesonotum, very much 

 more so between the meso- and epinotum. Pro-mesonotal suture 

 obsolete, the meso-epinotal wide but not very deep. Thorax one and 

 a half times longer than it is wide in front, twice as wide in front as 

 it is between the epinotal spines, fairly convex above lengthwise, 

 particularly the pronotum. Epinotal spines divergent, acute, directed 

 obliquely upwards, as long as the dorsum of the epinotum, much 

 longer than their basal width, and longer than the interval between 

 their bases. Episternal teeth small and triangular, hardly one-third 

 as long as the epinotal. Declivity subvertical, 1st segment of petiole 

 with the peduncle longer than the node ; the latter squamiform, longer 

 vertically than it is wide, thinner at the sides than at the summit, 

 the anterior and posterior face's vertical, inclined slightly forwards. 

 Second node lenticular, the anterior and posterior faces meeting above 

 acutely, slightly wider than the 1st node, and nearly twice as wide as 

 it is long. Abdomen subglobose, a little longer than wide. Femora 

 moderately swollen. 



$ (hitherto undescribed). 4 mm. Piceous. Thorax wider 

 than the head. Pronotum coarsely reticulate-rugose, the shoulders 

 subangular. Anterior margin of mesonotum very convex. Meso- 

 notum, scutellum, and epinotum strongly and longitudinally striate ; 

 the striae on the epinotum do not quite reach the bottom of the 

 declivity. Epinotal spines horizontal, less divergent than in the ^ . 

 Wings hyaline, nervures and stigma pale yellow. 



In the largest specimens of the $ the sculpture is stronger and 

 closer, and the spines are directed more steeply upwards, but the 

 existence of forms intermediate in size and sculpture precludes their 

 separation as a distinct variety. 



Redbank, S. Rhodesia ; Durban (3 - 4-3 - 5 mm.) ; Bulawayo (3 - 6 

 mm.) ; Hope Fountain, S. Rhodesia (3"8 mm.). 



This species forms largely large nests under stones. It preys to a 

 great extent on termites, and also attends aphides and scale-insects on 

 plants. 



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



T. (xiphomyrmex) Humbloti, Forel, var. Victoriensis, Forel. 



Grrandidier Hist. Madagasc. 20, p. 154, 1891. 

 (Variety) Ann. Soc. Ent. Belg., vol. 57, p. 120, $, 1913. 



$ . 3"2-38 mm. Piceous, head slightly reddish, legs, mandibles, 

 and antennae ferruginous. Not unlike Weitzaeckeri, differing from it 

 in the following characters : 



