286 Annals of the South African Museum. 



Head, excluding the mandibles, one-quarter longer than wide, 

 parallel-sided, a trifle wider behind than in front, the posterior 

 angles very rounded, the posterior margin straight. Eyes not large, 

 placed in the middle of the sides. The clypeus has three raised 

 longitudinal lines on the median area, and its lateral ridges are 

 small. Mandibles triangular, closely and finely striate, subopaque, 

 armed with 5 or 6 small teeth. The frontal carinae extend back 

 almost to the occiput ; they are slightly raised and on each side 

 below them there is a smoother space, merely reticulate-punctate, 

 which forms an indistinct demi-scrobe for the scapes. The latter 

 are rather thin, and extend beyond the hind margin of the head by 

 almost the length of the eye. The 1st joint of the flagellum is as 

 long as the three following joints taken together. 



Thorax rather narrow, very slightly constricted at the meso-epinotal 

 suture, twice as long as it is wide in front. The pronotum is convex 

 transversely and longitudinally, and joins the mesonotum in a gentle 

 curve. Pro-mesonotal suture obsolete, meso-epinotal very feeble. 

 Dorsum of meso- and epinotum horizontal. Dorsum of epinotum 

 twice as long as wide, and nearly twice as long as the oblique declivity. 

 Epinotal spines thin, a little shorter than the interval between their 

 bases ; episternal teeth small and obtuse. The declivity is narrow 

 and margined at the sides. The peduncle of the 1st segment of the 

 petiole is longer or at least as long as the node. The latter is 

 one and a third times wider than long, convex above from side to 

 side, the anterior face vertical, the short posterior face oblique. The 

 2nd node is a little wider than the 1st and a little wider than long, 

 narrower in front than behind. 



A very distinct species, easily recognised by its long head, and the 

 wide first node. 



Krantz Kloof, Natal. (H. B. Marley.) (G. A. coll.) 



T. laevithobax, Emery. (Plate VIII, figs. 110, 110a.) 



Ann. Soc. Ent. France, vol. 63, p. 39, $ , 1895. 



^ . 2 - 7-3 mm. Brownish-yellow, the head and abdomen darker 

 and more reddish-yellow. Legs and antennae pale ochreous. Head, 

 pro-mesonotum, and abdomen shining, epinotum and nodes only 

 slightly so. Pilosity yellow, long and suberect, more abundant on 

 the abdomen than elsewhere. Pubescence of the legs and antennae 

 rather long, yellow and oblique. Head above, longitudinally striate 

 between the frontal carinae (about 5 striae), the striae connected by 

 a few feeble transverse strands. Sides of head below the demi-scrobe. 



