A Monograph of the Formicidae of South Africa. 397 



C. brevisetosus, Forel, race ltjjae, Forel. 



Mitth. Schweiz. Ent. Ges., vol. 10, p. 305, £, 1901. 

 (Race) Deutsch. Ent. Zeitschr, p. 311, £ , 1911. 



^ • 32-4 mm. Colour and pilosity as in batonga and the preceding 

 species. Whole body fairly dull. Head reticulate, the reticulations 

 raised and sharply defined and much narrower than the spaces between 

 them. Thorax and nodes longitudinally and coarsely rugose. The 

 rugae on the thorax have short transverse branches, which barely meet 

 the rugae on either side, the spaces between them very finely reticulate, 

 Abdomen closely and finely reticulate-punctate, with a few fine longi- 

 tudinal striae superimposed near the base, sometimes extending 

 beyond the middle of the abdomen. Head quadrate, rounded and 

 very slightly narrowed in front of the eyes, barely longer than wide, 

 the sides in greater part parallel, the posterior margin straight. The 

 two teeth on each side of the posterior margin fairly strong and 

 prominent, the side margins of the head feebly denticulate, the tooth 

 in front of the eye small and inconspicuous. Eyes lai-ge, more oblong 

 than in the preceding species, placed in greater part behind the middle 

 of the sides and occupying about two-fifths of their length. The 

 anterior margin of the clypeus has a shallow and fairly wide emargina- 

 tion in the middle, behind which the surface of the clypeus is slightly 

 depressed. Prothorax narrower than the head. Lateral margins of 

 the pro-mesonotum strongly denticulate, the pronotum nearly twice as 

 wide as long. Mesonotum not much narrower at the base than in 

 front (considerably narrower in durbanevsis and Marleyi). Dorsum 

 of epinotum twice as wide in the middle as long, the lateral teeth near 

 the base wide and obtuse ; epinotal spines fairly divergent, flattened, 

 nearly twice as long as their basal width and longer than the interval 

 between their bases, which is deeply arcuate. Nodes of petiole similar 

 to those of batonga, but the 2nd node is much higher in front than 

 behind and higher than the 1st. Abdomen longer than wide, rounded 

 at the apex, emarginate at the base. The degree of convexity of the 

 sides of the abdomen is rather variable, in some specimens it is fairly 

 great, in others the sides are almost parallel. 



$ . 4 - 6 mm. Ocelli small. The teeth on the posterior margin of 

 the head smaller than in the $ . Mesonotum longitudinally rugose 

 (the fundamental sculpture is densely reticulate-punctate), the rugae 

 fine and parallel. Epinotal teeth shorter and broader than in the $ , 

 and more obtuse at the apex. The 1st node of the petiole is less wide 

 in front, almost parallel-sided. Abdomen parallel-sided, quite twice 

 as long as wide. Deiilated. Otherwise like the £ . 



