534 Annals of the South African Museum. 



and continuous with its lower surface. Second segment of petiole 

 somewhat wider than long, as wide as the 1st, quite round, without a 

 trace of a median groove or impression. Cheeks, sides of the clypeus, 

 apart of the sides of the frons finely and longitudinally striate, reticu- 

 late between the striae. The rest of the head, the abdomen, 2nd segment 

 of petiole, a part of the mesonotum and sides of the pronotum smooth, 

 shining, sparsely and finely punctured, with a mere trace of a reticulate 

 sculpture here and there. The rest of the thorax closely and not very 

 finely punctate-reticulate and fairly dull ; 2 or 3 longitudinal 

 rugae on the pronotum. First segment of petiole reticulate. Erect 

 pilosity sparse and fairly coarse. The hairs are somewhat truncate 

 and clavate as in Leptothorax. Pubescence decumbent and very 

 scanty. The tibiae and femora with only decumbent hairs. Dark 

 castaneous brown. Mandibles, antennae and tarsi reddish-yellow. 

 Legs and club of antennae more brownish. 



" Transvaal (Rev. P. Berthoud) ; Capetown and Vrijburg (Simon)." 



Var. Hammi, n. v. 



^ . 2'4 mm. Pitch black, legs and antennae brownish. The 

 whole thorax, including the declivity of the epinotum, and the sides 



Fig. 48. — C. transvaalensis, Forel, var. Hammi, n.v. 



of both segments of the petiole, very sharply reticulate, the meshes 

 wide and shining, the strands thin and trenchant. The reticulation 

 is strongest on the epinotum, more superficial and closer on the 

 mesonotum. The pro- and mesonotum are also finely rugoso-striate 

 longitudinally. The declivity of the mesonotum distinctly marginate 

 at the sides, the margins being continued over the dorsum of the 

 epinotum and along the inner side of the spines. The latter are not 

 very short, quite half as long as the interval between their bases. 

 The 1st joint of the fiagellum is as long as the2nd-4th taken together, 

 the 3rd, 4th and 5th a little wider than long, the 2nd and 6th a trifle 

 longer than wide. Erect pilosity whitish, fairly long. 

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

 I have much pleasure in naming this variety in honour of my 

 friend, Mr. A. H. Hamm, of the Hope Museum, Oxford. 



