A Monograph of the Formicidae of South Africa. 701 



oblique. Scale rather narrow, thin, slightly convex in front, flat 

 behind. Abdomen oval. Legs and antennae of medium length. 

 Mandibles shining. Body entirely dull. Head and dorsum of the 

 thorax very densely and deeply reticulate-punctate. Sides of the 

 thorax very densely and deeply striate-reticulate or striato-punctate 

 longitudinally. Scale transversely striate. First segment of the 

 abdomen and the apical halves of the following segments very finely, 

 closely and deeply reticulate-punctate. The base of the 2nd-5th 

 segments very finely, closely and deeply striate transversely or 

 obliquely. Legs punctate or reticulate-punctate. Scapes very finely 

 reticulate. The scapes and legs have also a few deep and large 

 punctures which are not present on the body. A few long, whitish, 

 very thick and blunt hairs, (as in C.fulvopilosus), occur here and there 

 over the whole body. The latter, including the legs and antennae, 

 with a very fine and short, sparse and whitish pubescence. Tibiae 

 and scapes without erect hairs. Black. Mandibles and flagellum 

 castaneous brown. Basal half of the scapes yellowish rusty-red. 

 Apical margins of the abdominal segments narrowly testaceous. 

 Valdezia, Transvaal, 1 specimen, (Berthoud)." 



C. ostiariuS; Forel. (Plate IX, fig. 141). 



Bull. Soc. Vaud. Sc. Nat., vol. 50, p. 258, 2[, & 1914. 



21., 8*5-9 mm. Head black or very dark brown, the anterior corners 

 and anterior third of the clypeus sometimes brownish ochreous, 

 thorax and abdomen brown, the latter darker than the thorax, legs 

 and antennae brownish ochreous, mandibles brown, apical margins of 

 the abdominal segments testaceous. Occiput slightly shining, the 

 rest of the head dull. Anterior half of the head very coarsely rugoso- 

 reticulate, the reticulations prominent, the spaces in between reticulate- 

 punctate, the posterior half of the head strongly and deeply reticulate- 

 punctate, the sculpture becoming feebler towards the occiput. 

 Mandibles stout and very convex, finely reticulate, also closely, 

 coarsely and deeply punctured, armed with 7 or 8 teeth. The 

 mandibles are inserted at some distance from the sides. Thorax, 

 legs and abdomen moderately shining, very finely rugulose. A very 

 sparse, erect and yellowish pilosity over the whole body ; a very fine 

 pubescence on the legs and antennae, almost absent elsewhere. Head 

 rectangular, a trifle longer than wide, the middle three-fifths of the 

 sides straight, the rest of the sides slightly convex, hardly wider 

 behind than in front, the posterior margin feebly convex. The 



