A Monograph of the Formicidae of South Africa. 569 



brown, the abdomen reddish-brown. This may be due to exposure 

 and consequent bleaching, since the specimens were collected in 1899. 

 Mayr's diagnosis of the species being so short, I append a fuller one, 

 based on these specimens. 



^ • Pilosity brown, very short and sparse. Head, pro-mesonotum, 

 petiole and abdomen shining and smooth (at the most only with a 

 microscopical sculpture) ; meta- and epinotum finely rugulose and 

 dull. Head subovate, widest behind, as wide as long, the posterior 

 margin straight, the posterior angles widely rounded. Eyes barely 

 convex, rather large, placed a little behind the middle of the sides. 

 Scapes extending beyond the posterior margin by very little more than 

 one-third of their length ; 1st joint of fiagellum twice or a little more 

 than twice as long as the 2nd, the latter as long as wide, all the 

 remaining joints longer than wide. Clypeus obtusely carinate, the 

 anterior margin convex. Pronotum one and a-half times wider than 

 long in the middle, its anterior half somewhat flattened. Mesonotum 

 a trifle wider than long, one-third longer than the metanotum. Meso- 

 metanotal suture not deep. Metanotum widening posteriorly, twice 

 as wide behind as in front. Meta-epinotal suture fairly deep. 

 Dorsum of epinotum ending in a blunt cone on each side, between the 

 cones feebly concave transversely, hardly convex lengthwise ; the 

 declivity as long as the dorsum. The posterior face of the scale of 

 the petiole a little convex transversely, the anterior face flat, bidentate 

 above (the teeth small, shorter than the interval between them), 

 emarginate between the teeth. The whole petiole is about as long as 

 the scale is high. 



" S • 3 mm. Brownish- black, fairly shining, clypeus, scape, tibiae, 

 femora and abdomen brown ; fiagellum, tarsi and mandibles more 

 or less brownish-yellow, the genital armature partly brown, partly 

 brownish-yellow. The pilosity is sparse ; on the head, thorax and 

 base of abdomen there are only a few isolated hairs, the end of the 

 abdomen more abundantly pilose, the legs without pilosity. Pubescence 

 yellow, fairly fine and not abundant, most plentiful on the legs. Head 

 triangular, with strongly-rounded corners, fairly smooth, very slightly 

 rugulose or rugulose-punctate. Mandibles flattened, very shining, 

 feebly rugulose, 4-dentate. . . . The clypeus like that of the £ . 

 Frontal area large, triangular, not clearly defined behind. Antennae 

 12- jointed, . . . scape long and thin, the fiagellum thicker, the 

 1st joint nearly twice as long as the 2nd, which is the shortest, the 

 remaining joints becoming gradually lunger in succession towards 

 the apex. Frontal carinae fairly short, straight and parallel. The 

 frontal sulcus not distinct. Eyes large, hemispherical, placed at 



