388 Annals of the South African Museum. 



They are timid and slow-moving insects, often feigning death or 

 dropping rapidly to the ground when disturbed. As Bingham has 

 remarked in connection with this genus (Fauna Brit. India, For- 

 micidac), these ants have the habit of wandering over the trunks of 

 trees and the leaves in what appears to be a very aimless and languid 

 manner. I have occasionally seen them breaking open the earthen 

 tunnels constructed by termites over the trunks of trees and attack 

 the inmates. I have not yet observed any of the species attend- 

 ing on aphids or scale insects, although it is quite probable that they 

 do so. 



(N.B. — It is usually necessary to use a magnification of not less 

 than 35 diameters to appreciate the character of the fundamental 

 sculpture.) 



C. batjmi, Forel. 

 Mitth. Schweiz. Ent. Ges., vol. 10, p. 304, £ , ? , J, 1901. 



" $ . 4 - 5-4 - 8 mm. Very similar to hararicus, Forel, but the head 

 is by no means so much narrowed in front, and the frontal carinae are 

 wider. The body is dull ; the sculpture much coarser, reticulate, or 

 reticulate-rugose on the head, with almost pit-like and dull meshes, 

 coarsely and longitudinally rugose on the thorax and petiole. 

 Abdomen fairly finely and evenly rugose longitudinally (more strongly 

 so than in hararicus), and also densely reticulate-punctate and dull. 

 The femora are black. Otherwise like hararicus and also very similar 

 to Johannae, but without the tooth on the head behind. 



" $ . 6 mm. The pits on the head are entirely separated, 

 discrete ; duller, narrow, and net-like strands run between them. 

 The dull mesonotum is sparsely pitted. B,ugosity of the elongate 

 abdomen weaker than in the $ . Deiilated. 



" ^ . 4*3 mm. Also dull, the abdomen shallowly reticulate and 

 shining. There is a small tooth on each of the posterior angles of 

 the head. Sculpture on the head and thorax more superficial than in 

 the ty . Mesonotum with some sparse and shallow pits ; Mayrian 

 furrows present. Head and thorax dull and more strongly sculptured. 

 Head strongly convex and gibbous above. Epinotal teeth wide, 

 short and blunt. Wings short, yellowish, the nervures pale. 

 Antennae almost the same as those of the £ , also the scrobes and 

 legs. 



" Cubango-Cuito, Mossamedes. This species differs from rugosus, 



