236 Annals of the South African Museum. 



as far as the eyes, and the front of the head, striated. There is a 

 median sulcus, and the occipital region is tiunsversely striate. Man- 

 dibles tridentate ; antennae as in the $ minima ; thorax moderately 

 stout; the meso-epinotal suture impressed ; the epinotum distinctly 

 angulate ; the meso- and metapleura punctate, dull ; dorsum of the 

 declivity transversely rugulose, nodes of the petiole transverse. 



"£. Minima, 1*5— 1 - 7 mm. Pale, testaceous, pellucid; abdomen 

 fuscous, very shining, very scantily punctured with piligerous punc- 

 tures. Head moderately elongate ; cheeks striated anteriorly. The 

 first two joints of the antennal club subecpial, the last joint a little 

 longer than the two preceding together ; mesopleura reticulate- 

 punctate. Epinotum obtusely angulated between the dorsum and the 

 declivity ; nodes of petiole small and subequal. 



" Makapan. (Simon.)" 



M. AMBiiTOPS, Emery, race bttlawayense, Forel. 



Bull. Soc. Ent. Ital. xxvi, 1894, p. 148. (Race) Bull. Soc. Yaucl. Sc. 

 Nat, vol. 50, p. 247, £ , 1914. 



T8-4 mm. Strongly polymorphic, having the facies of a Solenopsis. 

 The smaller $ $ , T8-23 mm., differ from the larger $ $ in having 

 the head longer and the sides less convex, but a complete transitional 

 series can be found between one extreme and the other. 



^ . Maxima, 4 mm. Ochreous, somewhat reddish, the abdomen 

 darker, with the apical margins and the greater part of the sides of the 

 segments fuscous. The nodes above and the masticatory margin of 

 the mandibles slightly brownish. A short and rather sparse pubes- 

 cence on the head and thorax, much longer and denser on the legs and 

 antennae. Margin of clypeus, thorax, nodes, and abdomen with a 

 long, pale, yellowish and sparse pilosity. Smooth and shining. Head 

 strongly but sparsely punctured (as in Solenopsis punctaticeps) ; pro- 

 mesonotum more feebly and sparsely punctured. The mesopleura 

 distinctly reticulate-punctate ; the sides of the epinotum above 

 shallowly and transversely striate, oblicpiely' striate below. Abdomen 

 very smooth and shining, each pilose hair is inserted in a small 

 puncture. The head in front, on each side of a smooth area sur- 

 rounding the antennal sockets, is obliquely and closely striate, the 

 striated area extending back as far as, and a little below, the eyes. 

 Head, excluding the mandibles, hardly longer than wide, the sides very 

 convex, the posterior angles strongly rounded, the occipital margin 

 shallowly concave. The eyes are rather small and placed well within 

 the anterior half of the head. The median area of the clypeus is 



