24 Annals of the South African Museum. 



of petiole longer than wide, distinctly wider behind than in front, 

 slightly convex, rounded above and truncate in front and behind ; 

 the posterior dorsal margin is bi-emarginate, so as to form a tooth 

 on each side and a median obtuse angle. The ventral lamella of 

 the petiole is produced anteriorly into a truncated lobe. First 

 abdominal segment narrower at the base than at the apex, a little 

 shorter and narrower than the 2nd segment. Abdominal constriction 

 distinct. 



S . 13 - 5 mm. Black, pruinose pubescence as in the $ . On the 

 head, epinotum, and petiole the puncturation is much sparser than in 

 the £ ; the 1st abdominal segment is sparsely and very shallowly 

 punctured, so as to appear almost impunctate. Mesonot'um strongly 

 punctured in its basal half, scutellum feebly punctured. Head 

 somewhat triangular, occipital margin straight, posterior angles 

 rounded. Eyes very large and prominent ; ocelli large but not 

 raised. The frontal carinae reach far back, frontal area distinct. 

 Clypeus convex, posterior margin very ill-defined. Mandibles large, 

 sinuate externally, masticatory margin obtusely denticulate, the 

 apex incurved. The antennae reach back as far as the posterior 

 extremity of the thorax; the scape is slightly shorter than the 

 2nd joint of the filiform flagellum ; the 1st joint of the latter is 

 very short. 



Pronotum exposed, one-third as long as the mesonotum, and with 

 a short lateral fovea on each side of the apical margin ; the parapsi- 

 dial areas are marked off by a raised line. The declivity of the 

 epinotum sub -concave and marginate, the dorsal lateral teeth very 

 much reduced. The petiole is like that of the £ but is less dis- 

 tinctly truncate posteriorly, and the posterior dorsal margin is only 

 sub-angular and not toothed on each side. The abdomen is as in 

 the $ . Pygidium with apex rounded. Wings smoky, especially 

 round the stigma ; nervures pale brown, stigma dark brown, legs 

 slender. 



Bab. Southern Ehodesia. (G.A., S.A.M., P.M. colls.) 



/ Var. punctata, n. v. 



This variety differs from the type in having the posterior region of 

 the head, the pronotum and epinotum more densely punctured. The 

 node of the petiole is as wide in front as behind, the posterior lateral 

 teeth shorter and more obtuse, and the ventral lamella acute 

 anteriorly, the apex of the projection not being truncate as in the 

 type. 



Hab. Victoria Falls. (G.A., S.A.M.) 



