A Monograph of the Formicidae of South Africa. 391 



Var. BULAWATBNSis, Forel. 

 Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 218, $ , ? , 1914. 



5 . 4 "5-5 "2 mm. This differs from batonga as follows : The head 

 is less narrowed in front of the eyes. The marginal teeth on each side 

 of the angles of the clypeus are slightly larger but not more acute. 

 The sculpture of the head is stronger, both the reticulations and spaces 

 between them being wider. This also applies to the thorax, in which 

 the reticulations are more distinctly accentuated longitudinally, and 

 are more coarse in the anterior half of the pronotum. The teeth at 

 the base of the lateral margins of the epinotum are prominent and 

 much larger, the epinotal spines more divergent. Otherwise like 

 batonga. 



9 . 6"l-6 - 4 mm. The sculpture differs from that of the $ in 

 having the reticulations less distinct ; this is due to the surface being 

 deeply pitted and the space between the pits rather flattened. On the 

 pronotum the sculpture is stronger, and on the mesonotum the pits are 

 elongate and sparser. The dorsum of the epinotum is very coarsely 

 and transversely rugose. The fundamental sculpture of the thorax 

 and nodes consists of a very fine and close reticulation. The head is 

 more parallel-sided than in the $ , and the lateral margins behind the 

 eyes are only feebly denticulate. The ocelli are inconspicuous and 

 level with the surface. The pronotum is widely exposed above and 

 hardly lower than the mesonotum. The latter, excluding the paraptera 

 and scutellum, is roundly triangular. Dorsum of epinotum moderately 

 convex transversely, almost horizontal, and about twice as wide as 

 long. Epinotal teeth shorter than in the $ , their inner margins 

 truncate at the apex. The abdomen, except towards the base and 

 apex, parallel-sided, about three-fifths longer than wide. Wings 

 tinged with yellow. Otherwise like the $ . 



Bulawayo ; nesting in hollow twigs of Acacia horrida. (E.M., GT.A. 

 colls.) 



C. intrudens, Smith. 



Trans. Ent, Soc. London, p. 609, £, $ , $, 1879. 



"9- 3 lines ( = 62 mm.). Opaque black; the scape of the 

 antennae, the base and apex of the flagellum, the tips of the femora, 

 the tibiae, anterior tarsi, and the apical joints of the intermediate 

 and posterior pairs, light ferruginous ; the wings flavo-hyaline, the 

 nervures rufo-testaceous. 



