280 Annals of the South African Museum. 



wide, about as wide in front as behind, widest across the eyes ; the 

 the latter occupy about one-third of the sides and are placed a little 

 in front of the middle. Scape of antenna as long as the 2nd joint of 

 the flagellum, and extending back as far as the anterior ocellus. 

 Clypeus with a median carina. Frontal carinae well developed. 

 Mandibles triangular, 5-dentate, dull and finely rugulose, the masti- 

 catory margin dark brown. Mayrian furrows on the mesonotum 

 distinct. Mesonotum and scutellum raised above the level of the 

 dorsum of the epinotum. The latter is oblique, sloping down to the 

 brow of the declivity, and is about one-third longer than the declivity. 

 Epinotal spines well developed, the episternal very obtuse. The 1st 

 node of the petiole is nearly twice as long as wide, the lateral margins 

 of the dorsal face almost parallel. Second node like that of the 9 

 but longer, as long as wide, less convex above transversely than in the 

 $ . Legs long and thin. Wings as in the $ . 



Bulawayo and S. Rhodesia generally, common. The nest, which is 

 in the ground, is usually surrounded by a more or less circular crater 

 of earth. (S.A.M., E.M., G-.A. colls.) 



Eace continentis, var. Eudoxia, Forel. 



Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 231, £ , 1914. 



$ . 3*8-4 mm. Darker than the type of the race ; dark brown, the 

 abdomen black, the mandibles and limbs rusty-red. The sculpture is 

 finer than in the race, the longitudinal striae being much less coarse. 

 The epinotal spines are slightly longer. This variety is almost inter- 

 mediate in its structure and general appearance between quadris- 

 pinosum and race continentis. 



Willowmore, Cape Prov. (S.A.M., E.M., G.A., colls.) 



Eace Petersi, Forel. 



Schultze, Eeise Siid Afrika, vol. 4, p. 19, £ , 1910. 



" £ . 2*8-3-2 mm. Mandibles sharply striated, with a feebly 

 convex external margin, 3 strong teeth in front and 4 or more smaller 

 ones behind. Clypeus sharply carinate. Frontal area triangular. 

 Frontal carinae divergent, not long. No scrobe and no depression 

 for the scape. Head rectangular, distinctly longer than wide, mode- 

 rately concave behind, the sides feebly convex, as wide behind as in 

 front. Eyes not large, convex, placed in the middle of the sides. 

 The scape extends beyond the hind margin of the head by about 

 twice its own thickness ; 3rd and 4th joints of the flagellum about as 

 wide as long, the rest all longer than wide. Pronotum convex in 



