240 Annals of the South African Museum. 



sides convex (not straight as in exiguum, oulawayense) , a trifle wider 

 than the 1st. 



$ . 3 - 8 mm. Yellowish or reddish brown ; legs, antennae and 

 mandibles dark ochreous. Head somewhat quadrangular, one-quarter 

 longer than wide. Thorax narrow, two and a half times as long as 

 wide, almost parallel- sided or only slightly convex. Pronotum slightly 

 exposed above. The brow of the declivity of the epinotum rounded, 

 the dorsum short and about half as long as the vertical declivity. 

 The 1st node of the petiole is wider and more flattened above than in 

 the £ . The 2nd node is more convex above and at the sides than 

 in the ^ > an d is two-thirds longer than wide. Otherwise like the ^ ■ 

 (Dealated.) 



Durban. (Arnold, Cooper.) (E.M., G-.A. colls.) 



Sub-Tribe SOLENOPSIDINT, Emery. 



Genus DIPLOMORITTM, Mayr. 

 Ann. K.K.KH. Mus., Wien, vol. 16, p. 16, 1901. 



Characters. 



^ . Antennae 11-jointed ; clypeus without carinae. Pro-mesonotal 

 suture almost effaced ; meso-epinotal suture deep. Epinotum unarmed, 

 its dorsum slightly excavated as in some species of Honomorium. 

 Middle and hind tibiae without calcaiia. 



$ . Considerably larger than the £ . Antennae 11-jointed. Pro- 

 notum vertical, not exposed dorsally. Epinotum unarmed. Discoidal 

 cell of anterior wing large, radial cell open. 



$ . Unknown. 



D. longipbnne, Mayr. 



Loc. cit., pp. 16-18, £ , ? . 



" $ . 1'8-1'9 mm. Pale brown, the mandibles and tarsi brighter. 

 A sparse and moderately long pilosity on the body ; on the legs and 

 antennae shorter, but more abundant. The upper surface of the head 

 also has shorter and more abundant hairs, intermixed with the longer 

 ones. Polished and shining ; the mandibles partly longitudinally 

 striate and with a few piligerous punctures ; the sides of the 

 niesothorax reticulate-punctate. Head rectangular, but little longer 

 than wide, with rounded posterior angles and somewhat convex sides. 

 Mandibles with a very oblique masticatory margin, armed with 3 

 larger teeth in front, and 3 or 4 smaller and less distinct teeth 



