J 76 Annals of the South African Museum. 



" <$ . 13-5 mm. Black. The anterior tarsi and base of the genital 

 armature testaceous. Subopaque. Sculpture and pilosity as in the 

 ? . Head a little wider than long. Posterior margin of the head 

 straight, the posterior corners rectangular and rounded. The oval 

 and very oblique eyes occupy the median two fourths of the sides of 

 the head. Frontal area strongly impressed. Clypeus without a 

 carina. Mandibles with 5 or 6 unequal teeth. First joint of the 

 flagellum longer than wide; the 2nd joint a little less long than the 

 scape. The declivity of the epinotum slightly convex in all directions, 

 a little longer than the dorsum. Wings brownish black, the nervures 

 darker, the stigma black. First joint of the petiole channelled in its 

 anterior half, feebly convex behind. Second node as long as wide. 

 Genital armature exserted, the distal portion of the blackish stipes 

 strongly excised inwards, and ending in a lanciform point, turned 

 inwards and backwards." 



South Africa. (Gr. A. coll.) 



S. (Sub-genus Sima, s. str.) natalensis, Smith. 



Cat. Hymen. Brit. Mus., vol. 6, p. 160, g 1858. 



^ . 7 mm. Dark ochreous yellow, somewhat darker and reddish on 

 the head, the flagellum darker towards the apex, the masticatory 

 margins of the mandibles blackish. Dull, very finely and closely 

 punctured all over, the puncturation of the head a little stronger. 

 Pubescence very short, microscopic, a few long hairs on the clypeus, 

 scapes, and apical segment of the abdomen. 



Head longer than wide, the sides feebly convex, the posterior angles 

 moderately rounded. The median area of the clypeus is slightly pro- 

 duced forwards, and obtusely tridentate. The frontal carinae raised 

 in front, divergent posteriorly. Mandibles longitudinally striate, 

 quadridentate. The scape does not extend back quite as far as the 

 middle of the eyes ; the 1st joint of the flagellum is half as long again 

 as the 2nd. The eyes occupy more than one-third of the sides of the 

 head, and are situated at about the middle. The two posterior ocelli 

 are present. The whole thorax is marginate at the sides and in front, 

 the margin blackish ; the sides and the dorsal surface of the thorax 

 meet in a right angle. The pronotum is widest in front, and two- 

 thirds wider than it is long ; the promeso- and mesometanotal sutures 

 distinct. The mesonotum is two and a half times wider than long, 

 and but half as long as the pronotum. The metanotum is feebly 

 defined at the sides posteriorly. The epinotum is nearly one-third 

 longer than the rest of the thorax, and nearly twice as long as wide, 



