680 Annals of the South African Museum. 



cuneiform, flat behind, feebly convex in front, the dorsal edge 

 trenchant, not acuminate in the middle. Tibiae cylindrical, with a 

 few setae below. 



$ minor, 5-5-7-8 mm. Entirely dull ochreous, mandibles, flagellum 

 and tarsi more or less reddish brown. Head longer than in the 

 larger tyty, or one-fourth longer than wide, the sides less convex, the 

 posterior margin feebly convex. The scapes extend beyond the hind 

 margin by half their length. Otherwise like the £ media. 



?, (hitherto undescribed), 10 mm. Dark reddish ochreous, the sides 

 of the thorax more or less brownish, abdomen yellowish brown, darker 

 than in the $ media. Head like that of the £ minor. Lobes at the 

 base of the scapes less prominent, more obtuse at the apex. Dorsum 

 of the epinotum twice as wide as the base is long, joining the vertical 

 declivity in a short curve ; the declivity not quite twice as long as the 

 dorsum. Dealated. Otherwise like the £. 



Steinkopf, Little Namaland, (Schultze) ; Namsem, S.W.A. 

 (K. W. E. Tucker) ; Willowmore, Cape Prov. (Dr. H. Brauns). 



In view of the total absence of the moustache on the clypeus, it- 

 is doubtful whether this species should be placed in this sub-genus. 

 However, it has been assigned to this sub-genus by Dr. Forel, and, in 

 the absence of the 2J. caste, it may as well be placed there as in any 

 other sub-genus. 



(S.A.M., R.M., G.A. colls. ; type of $ in my collection). 



Sub-genus DINOMYRMEX, Ashmead. 



Canadian Entom., vol. 37, p. 384, 1905. 



C. longipes, Gerst. (Plate IX, figs. 142, 142a). 



Monatsb. Akad. Wiss. Berlin, p. 262, 8, 1858. 



Archiv f. Naturgesch., vol. 37, p. 343, 2|, 1870. 



Forel, Voeltzkow's Reise Ostafrika, p. 91, <$, 1907. 



"2J.. These stand in about the same relationship to the small- 

 headed ££, as they do in the case of C. niaculatus, .... As in macu- 

 latus the large-headed ££ (i.e. 2J.2J.) have the head, as far as the base 

 of the antennae, much more darkly coloured than in the £, the body 

 is almost coal-black, the legs are at least piceous, the coxae and 

 trochanters reddish brown. The head is not only considerably 

 longer than in maculatus, but on account of the deep posterior 

 emargination is strongly cordate ; it is quite dull, closely and finely 



