o 



50 Annals of the South African Museum. 



the extremity of the scrobe ; 2nd-8th joints of the flagellum wider 

 than long, the 2nd-6th almost half as wide again as long, the apical 

 joint one-third longer than wide. The flagellum is rather thick and 

 short, not much longer than the scape. Median area of clypeus 

 almost vertical in front, the anterior margin feebly emarginate in the 

 middle. Mandibles curved, smooth and shining, very finely and 

 sparsely punctured, armed with 5 widely spaced teeth ; between the 

 posterior pair of teeth there are 2 or 3 denticles. Thorax narrower 

 than the head; pro-mesonotal suture faintly indicated, nieso-epinotal 

 deep. Pro-mesonotum feebly convex longitudinally and transversely, 

 one-third longer than wide in front. Shoulders of pronotum slightly 

 rounded, almost rectangular. Dorsum of epinotum moderately convex 

 lengthwise, one and a half times longer than wide ; epinotal teeth 

 short, triangular, shorter than the interval between their bases, very 

 slightly divergent, directed obliquely upwards. Declivity of epinotum 

 a little shorter than the dorsum, vertical, sharply marginate at the 

 sides. Episternal teeth shorter than the epinotal, wider than long. 

 Peduncle of the petiole shorter than the node ; the latter narrow and 

 high, one-fourth longer than wide, the anterior and posterior faces 

 subvertical, the dorsal face strongly convex. Second node semi- 

 circular, widest behind, two thirds wider than the 1st, and a little 

 wider than long, the sides oblique and convex. Abdomen oval, nearly 

 one-half as long again as wide. Tibiae and femora strongly swollen 

 and slightly flattened from front to bach. 



9 (hitherto undescribed). 4-4T mm. Very similar to the Q . 

 Eyes hardly larger than in that sex, ocelli small. Pronotum narrowly 

 exposed above in the middle, widely so at the sides, the shoulders as 

 in the $ . The lateral margins of the pro- and mesonotum almost 

 parallel as far as the tegulae. Mesonotum sparsely and strongly 

 punctured, flattened. First node a little shorter than in the £ . Wings 

 slightly fuscous, nervures pale brownish-yellow. Otherwise like 

 the g. 



£ (hitherto undescribed). 37 mm. Black, the apical half of the 

 abdomen dirty brownish-yellow, tarsi pale yellow, the rest of the legs 

 pale brown, antennae and mandibles yellow. Head subopaque, closely 

 rugulose. Epinotum and sides of the thorax, and the posterior half 

 of the 1st node more or less rugulose and reticulate, nitidulous. The 

 mesonotum and scutellum sparsely and strongly punctured, also 

 faintly striate in parts. Abdomen smooth and shining. Head high 

 behind and vertically truncate behind the ocelli, the brow of the 

 truncation rounded ; the posterior margin is continued round the 

 sides as a trenchant ridge, so that the posterior angles, looked at from 



