712 Annals of the South African Museum. 



superficially reticulate-rugulose. Head, sides of the thorax, petiole 

 and abdomen with a sparse, thin, erect and whitish yellow pilosity. 

 Pubescence of the same colour, absent from the disc of the mesonotum, 

 from the scutellum and epinotum, scanty on the head and sides of 

 the thorax, more abundant and of a pale golden colour on the abdomen, 

 but much less plentiful than in the 2J. or £. Head of the usual form 

 of this sex, a trifle wider across the eyes than long. Ocelli large, 

 glassy, citron-yellow. The scapes extend beyond the hind margin 

 by about half their length. Declivity of the epinotum subvertical, 

 twice as long as the dorsum, their junction forming a wide arc. Node 

 of petiole with an oblique anterior face which is wider than long, 

 slightly concave from side to side above and flat below ; the posterior 

 face flat below and convex lengthwise above, the dorsal face rounded 

 and emarginate in the middle. Wings hyaline, nervures ochreous, 

 stigma brown. 



S. Rhodesia, not rare. The nest is generally placed in grassy 

 situations, and the single entrance is surmounted by a tube, about 

 1-1|- inches high, made of interwoven pieces of grass and lined inside 

 with a thin layer of pressed earth. The diameter of the tube is just 

 large enough to permit the entry of one ant at a time. The purpose 

 served by this tube is unknown to me ; it may be made for the 

 purpose of preventing certain kinds of predaceous insects from entering 

 the nest. This species has a wide distribution, occurring over the 

 greater joart of the Ethiopian and Indian regions. 

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



C. Mayri, Forel. (Plate IX, fig. 138). 

 Bull. Soc. Vaud. Sc. Nat., vol. 16, p. 92, 21, 1879. 



2J., 9-10 mm. Black, basal third of the scapes ferruginous. 

 Mandibles castaneous. Sculpture of the head and thorax, excepting 

 the epinotum, like that of sericeus but less regular on the pronotum. 

 The epinotum and petiole very coarsely and irregularly rugose. 

 Abdomen finely, densely and deeply reticulate-punctate and dull. 

 Clothed all over with a fine, decumbent, short and greyish pubescence, 

 not hiding the sculpture. Pilosity greyish, longer and a little more 

 abundant than in sericeus, especially on the pronotum, margin of 

 the epinotal dorsum and on the petiole. Very similar to sericeus, 

 from which it also differs as follows : — 



The sides of the head are more convex, the posterior margin only 



