A Monograph of the Formicidae of South Africa. 369 



gradually from back to front, the posterior margin convex, the pos- 

 terior angles rounded. Eyes very convex, large, placed behind the 

 middle of the sides. Scrobes extend back almost as far as the 

 occipital margin, shining and nearly smooth, with a few vertical 

 striae posteriorly. Frontal carinae very divergent. Median area of 

 clypeus longitudinally rugose, wider behind than in front, the sides 

 somewhat raised, the anterior margin convex. Mandibles closely and 

 fairly strongly striate, armed with 5 stout teeth. Pro-mesonotum in 

 front as wide as the head, one-fifth wider than long, the anterior 

 angles acute and dentiform. Lateral margins of pronotum feebly 

 concave; there is a slight excision between the pro- and mesonotum, 

 the suture obsolete. Mesonotum as long as the pronotum, its lateral 

 margins slightly concave, the posterior lateral angles armed with a 

 tooth, which is hardly longer than wide at the base ; between the 

 lateral teeth, the posterior margin is produced into two much smaller 

 and triangular teeth, the space between them concave. Epinotum 

 armed with two acute, divergent spines, much longer than their basal 

 width, and longer than the mesonotal teeth. The upper face of the 

 epinotum is shallowly concave transversely, and nearly vertical. Eirst 

 node of petiole cuneiform, the anterior and posterior faces meeting in 

 a trenchant edge above, the ventral surface convex and bearing a small 

 tooth in front. Second node globose, a trifle longer than wide, not 

 wider than the 1st. Abdomen globose, emarginate at the junction 

 with the petiole, much wider than the thorax. 



Cape Prov. (Peringuey) ; Willowmore, Cape Prov. (Brauns). 

 The specimens from Willowmore measure 4-4 - 2 mm. in length, 

 greatly exceeding in size the types of Emery, which measure 27-3'5 

 mm. (S.A.M., E.M., G.A. colls.) 



M. Simoni, Emery. 

 Ann. Soc. Ent. France, vol. 63, p. 41, $ , 1895. 



" £ . 3 mm. Fusco-ferruginous, abdomen piceous ; head, dorsum 

 of thorax and petiole coarsely reticulate, the abdomen punctulate, dull, 

 evenly clothed with a long pilosity ; pre-mesonotal suture obsolete, 

 anterior angles of pronotum acutely produced, the posterior margin of 

 mesonotum deeply emarginate, with a strong, large and acute spine on 

 each side ; epinotum bispinose ; 1st node cuneiform, 2nd node sub- 

 globose. Vrijburg (Simon)." 



"In the shape of the thorax the species approaches M. Magrettii, 

 Andre, from which it differs more especially by the greater develop- 

 ment of the mesonotal teeth, which form strong spines, longer than 



