A Monograph of the Formicidae of South Africa. 249 



large. Head triangular. Frontal carinae very short. Clypeus with 

 a wide, convex, and raised median area. Thorax robust, much wider 

 than the head, and very convex ; pronotum not exposed above, lying 

 entirely beneath the mesonotum ; the latter with well-defined parap- 

 sidal sutures, Mayrian furrows absent. Scutellum high, much above 

 the level of the metanotum. Epinotum unarmed. First node of 

 petiole more or less cuneiform ; 2nd node transverse, flattened above. 

 Abdomen very large. All the tarsi densely clothed with stiff bristly 

 hairs. Wings long; anterior wing very pointed, 1 cubital arid 1 dis- 

 coidal cell, the radial cell closed. 



$ . Antennae 13-jointed, the scape short. Also much larger than 

 the ^ , and not very much smaller than the 9 > which it resembles in 

 general features. The nodes of the petiole are not so high as in the 

 $ , and the 1st node is thicker above. 



C. vidua, Smith. (Plate VI, figs. 79, 80.) 

 Cat. Hymen. B.M., vol. 6, p. 179, ? , J, 1858. Forel, Ann. Soc. Ent. 

 Belg., vol. 45, p. 392, £, 1901. Santschi, Boll. Lab. Zool. 

 Sc. Agri. Portici, vol. 8, p. 363, 1914. 



£ . 1 '6-2 mm. Pale ochreous yellow ; inner margin and teeth of 

 the mandibles brown. Smooth and shining. Head, pro-mesonotum 

 and nodes with a sparse and rather coarse puncturation ; epinotum 

 and abdomen very shallowly and sparsely punctured. Pilosity short, 

 scanty and yellowish, longest on the thorax, most abundant on the 

 legs. Legs and . antennae also with pubescent hairs. Head rect- 

 angular, hardly longer than wide, the sides feebly convex, the 

 posterior angles rounded, the occipital margin shallowly concave ; 

 about as wide in front as behind, but occasionally some individuals 

 from the same nest have the head a little narrower in front than 

 behind. Mandibles smooth and shining, quadridentate ; the two 

 anterior teeth large and sharp, the two posterior smaller and less 

 acute, and separated from the anterior pair by a short space ; occa- 

 sionally the hindmost tooth is obsolete. Clypeus produced, truncate 

 in front, the median area raised and convex, the anterior margin 

 straight. Eyes entirely wanting. Antennae 9-jointed; the scape 

 short, hardly extending back as far as the posterior third of the head ; 

 1st joint of the flagellum quite twice as long as wide, nearly as long as 

 the five following joints taken together, the latter all very short and 

 much wider than long. The last two joints of the flagellum form the 

 club, the last joint being three times as long as the preceding. Thoi'ax 

 fairly flat above. Pro-mesonotal suture absent, meso-epinotal distinct. 



