A Monograph of the Formicidae of South Africa. 509 



their basal width. The 1st segment of the petiole viewed from in front 

 subovate, the anterior margin convex, widest a little in front of the 

 middle, and wider in front than behind. The upper face is as long as 

 wide, feebly tuberculate on each side behind; the ventral surface bears 

 a sharp, vertical tooth. The node of the 2nd segment is one-quarter 

 wider than long, feebly grooved in the middle, the sides only slightly 

 convex. Abdomen truncate at the base, the corners subacute. 



" 9 . . . . Entirely dark castaneous brown, smooth and shining, 

 the cheeks and clypeus striate ; the frons also has some longitudinal 

 rugae ; the epinotum is finely striate at the base and on the sides, 

 Head wider than long. Epinotum armed with 2 strong teeth. 

 First node of petiole parallel- sided, bearing a transverse crest behind, 

 ending on each side in a small angular projection ; the crest separates 

 a wide anterior plane from a very short posterior one. Second segment 

 convex, without a longitudinal groove. The antennae are much shorter 

 than in the ^ ." 



DeAar (Simon) ; Namaqualand (Peringuey) ; Willowmore (Brauns); 

 Conway, C.P. (Hewitt). (S.A.M., R.M., Gr.A. colls.) 



Mayr (Ent. Tidskr., p. 251, 1896) remarks that a £ of this race, 

 received by him from Prof. Emery, agrees so closely with the type- 

 species that he is unable to discover any substantial difference which 

 would justify the separation of the form even as a variety. Only the 

 transverse impression at the base of the epinotal spines is wanting in 

 that specimen. But even this slight distinction is lacking in some of 

 the specimens which I have seen. 



C. Peringueyi, Emery. (Plate VI, fig. 83.) 



Ann. Soc. Ent. Prance, vol. 63, p. 27, $, ?, $, 1895. 



£ . 3'5-5 - 2 mm. Black, dull, very closely and fairly finely striate 

 longitudinally on the head, more coarsely on the thorax, especially the 

 epinotum. Abdomen shining, smooth, sparsely sprinkled with small, 

 shallow and piligerous punctures. The pilosity is scanty, fairly long 

 and yellowish ; pubescence moderately abundant, decumbent and pale 

 yellowish. Head about one- seventh wider than long, decidedly convex 

 above, the sides moderately convex and gradually convergent in front 

 of the eyes, the posterior margin straight. The scape hardly reaches 

 the posterior margin of the head ; 2nd-5th joints of the flagellum as 

 long as wide, or a little longer ; the club 3- jointed with the joints 

 sharply differentiated. Mandibles strongly and longitudinally striate. 

 Frontal area small but well defined ; a shallowly impressed shining 

 line extends from the frontal area to the posterior fifth of the head. 



