476 Annals of the South African Museum. 



subvertical ; epinotal teeth horizontal, wide at the base, triangular and 

 as long as wide at the base. Second node two and a- quarter times 

 wider than long, widest in the middle, the sides bluntly angular, the 

 anterior margin convex, but not semicircular as in the 2/ . Abdomen 

 half as long again as wide. Wings yellowish, nervures ochreous, stigma 

 yellowish-bro wn . 



$ . 73 mm. (hitherto undescribed). Eeddish-brown yellow (raw 

 umber), tarsi dark ochreous, the middle of the femora brown, antennae 

 pale ochreous, head brown, clypeus and mandibles brownish-yellow. 

 The mesonotum has three longitudinal and sharply-defined dark-brown 

 bands, the median one ending before the middle. Pilosity yellowish, 

 fine, oblique, fairly abundant on the thorax and nodes, sparse elsewhere. 

 Legs and antennae pubescent. Head dull, very finely reticulate, with 

 a fine rugosity superimposed, the rugae radiating outwards from the 

 ocellar region. Mesonotum longitudinally strigose, also sparsely and 

 very shallowly punctured. Scutellum transversely rugulose. Epinotum 

 shallowly reticulate, the sides striate above, the striae becoming 

 stronger and more or less concentric below. Nodes microscopically 

 reticulate and sparsely striate. Thorax slightly shining, more especially 

 the mesonotum and base of the scutellum. Nodes dull. Abdomen 

 smooth and shining. 



Head triangular-trapezoidal, widest in front, the posterior margin 

 feebly convex and somewhat produced at the lateral angles. The eyes 

 occupy a little less than the anterior half of the sides. Clypeus 

 subtubei-culate or gibbous in the middle. Mandibles with one large 

 apical tooth and three smaller teeth behind. Scapes shorter than the 

 space between the posterior ocelli; 1st joint of the flagellum sub- 

 globose, very little longer than wide. Thorax much wider than the 

 head ; scutellum convex above, higher than the mesonotum. Dorsum 

 of epinotum with a feeble elongate ridge on each side. First node of 

 petiole as long as wide, the anterior face convex from side to side, the 

 anterior margin rounded ; 2nd node campaniform, widest behind, a 

 trifle wider than long. Abdomen lai'ge, ovate, narrowed towards the 

 apex, the 1st segment nearly as long as the remaining segments taken 

 together. Wings as in the $ . 



This is a common species near Bulawayo, and is fond of making its 

 nest near houses and in gardens. There are several entrances to the 

 nest, surrounded by large heaps of excavated soil. It is partly 

 graminivorous and collects the seeds of a variety of grasses. (S.A.M., 

 B.M., G.A. colls.) 



The following species, being unknown to me in nature, have not 

 been included in the analytical key : 



