496 Annals of the South African Museum. 



the angles, somewhat wider than long, fairly straight in front and 

 behind, much the same as in tricolor, but with the sides less convex. 

 Club of antenna distinctly 3-jointed. Pronotum and mesonotum about 

 the same as in tricolor, but the pronotum is nevertheless narrower and 

 less sharply and less projectingly marginate at the sides. The lateral 

 marginal carinae of the mesonotum are more obtuse and less distinct 

 behind. Meso-epinotal suture as in tricolor. The epinotum is much 

 narrower than in tricolor, especially in the middle at the level of the 

 spines, and hardly wider there than in front or behind (rhomboidal in 

 tricolor and strongly dilated in- the middle). Moreover, the sides of 

 the dorsum of the epinotum diverge but feebly, so that the thorax, 

 seen from above, appears less constricted than in tricolor. The spines 

 are fairly long, thin, and widely divergent. The declivity of the 

 epinotum is lower and more oblique than in tricolor. First segment 

 of the petiole trapezoidal, with rounded anterior angles and straight 

 anterior margin, wider in front than long, and wider there than behind, 

 with a blunt tooth in front below. Second segment of petiole divided 

 by a median groove into two hemispheres. Abdomen fairly flat, long 

 and relatively narrow. Head closely and finely punctate-rugulose, with 

 a somewhat silky gloss. Thorax coarsely and sparsely longitudinally 

 rugose, closely reticulate-punctate between the rugae and fairly dull, 

 excepting the smooth and shining declivity of the epinotum. Petiole 

 closely reticulate-punctate. Abdomen feebly reticulate, evenly and 

 sparsely punctured, very shining. Outstanding pilosity almost obsolete. 

 Femora and scapes with a decumbent pubescence. The pubescence is 

 very short and scattered. Rusty yellowish-red. The abdomen brighter, 

 of a reddish brown-yellow. Legs and club of antennae brownish. 

 Mandibles brownish-red. Closely allied to tricolor, but clearly distinct 

 on account of the shape of the epinotum and the 1st segment of the 

 petiole, by the longer, narrower, and flatter form, and by the colour 

 and sculpture." 



Somaliland ; and East Coast of Africa, including Natal. 



Having only a single specimen (a co-type) of this species, I have 

 preferred to copy the original description. In the specimen referred 

 to the dorsum of the epinotum is shorter and much more convex 

 lengthwise than in tricolor ; the spines are shorter than in that race, 

 or not quite twice as long as their basal width, and a little shoi-ter than 

 the dorsum of the epinotum. The posterior margins of the hemi- 

 spherical discs of the 2nd node are more elevated and prominent than 

 in tricolor, and the pro-mesonotal suture is also deeper. 



