238 Annals of the South African Museum. 



shining ; head duller. Pilosity scanty, longer on the scutellum than 

 on the mesonotum. Head shallowly and longitudinally striate, trans- 

 versely so between the ocelli, subquadrate, the sides moderately 

 convex, the posterior angles rounded. The eyes are very large and 

 convex, occupying the whole of the anterior half of the head and 

 touching the base of the mandibles ; the latter short and nan*ow, 

 feebly dentate. Clypeus convex, the median area raised into a" promi- 

 nent tubercle. The 13-jointed antennae are densely covered with a 

 stiff, almost bristly, erect pubescence. They have a distinctive struc- 

 ture unlike that of any other <$ $ of this genus which are known to 

 me, excepting M. Enieryi, and resembling that of Solenopsis. The 

 antennae are setaceous, thinning considerably towards the apex. 

 The scape is very short, almost quadrate or only a very little 

 longer than wide, not longer than the 1st joint, which is wider 

 than the scape, and globose, as in Solenopsis. The 2nd joint is a 

 little longer than the 1st or 3rd ; the 2nd -4th joints cylindrical 

 and twice as long as wide, their inner margins convex, the outer 

 straight; the remaining joints are all much longer than wide, and 

 flattened. Pronotum not exposed above ; the mesonotam very convex 

 in front, horizontal behind, as wide as long, widest across the 

 tegulae. The scutellum convex, wider than long, sloping backwards. 

 The dorsum of the epinotum twice as wide at the base as it is long, 

 with a prominent boss on each side above the vertical declivity. 

 First node of petiole flattened, the anterior face vertical, the posterior- 

 dorsal face as long as wide, widest in front ; seen from the side, the 

 node is shorter than its peduncle. Second node wider than the 1st, 

 convex above, transversely ovate. Legs slender, not long. Wings as 

 in the ? . 



Hillside, Bulawayo. (A. M. Macgregor.) This species forms very 

 populous colonies, and almost invariably the nest is placed under 

 stones which also cover the nests of a small species of termite (species 

 unidentified). The galleries of the two nests are not in free 

 communication, and the termites are quickly attacked if the dividing 

 walls are broken down. 



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



M. (sub-genus Mitara, Forel) exiguum, Forel, var. btjlawatense, 



Forel. 



Mitth. Schweiz. Ent. G-es., vol. 9, p. 84, 1894. (Var.) Deutsch. Ent. 



Zeit. Beiheft, p. 217, £ , 1913. 



£ . 1-5 mm. Brownish yellow, the apical half of the abdomen dark 



brown, legs, antennae, mandibles and anterior margin of head yellow. 



