176 
Annals of the Transvaal Museum. 
Basal segment of abdomen smooth, the others closely, weakly punctured. 
Gastracoeli large, striated outwardly, the inner side deep and smooth. 
Female. 
Length, 13 mm. 
The pubescence is short, sparse, and white. The face and upper part 
of the clypeus are strongly, but not closely, punctured ; the front smooth, 
the vertex punctured. Thorax closely punctured, the metanotum more 
strongly than the rest. Scutellum smooth, the base sparsely, weakly 
punctured, each puncture with a hair. The second and following abdominal 
segments are weakly closely punctured. The temples are short, obliquely 
rounded. 
Listrodromini. 
Ctenochares, Foer. 
Ctenochares xanthomelas, Be. 
Cf . Cameron, Annals of South African Museum, Y, 177. 
A single example of this widely distributed species. 
Cryptinae. 
Cryptini. 
Osprynchotus, Spin. 
Osprynchotos ruficeps, Cam. 
Annals of South African Museum, V, 142. 
Lemana (Zoutpansberg District). October. One example. 
Osprynchotus capensis, Guer. 
Cameron, Annals of South African Museum, Y, 142. 
Waterval (Zoutpansberg District). January. Bietfontein (Pretoria 
District). November. 
The male varies in length from 15 to 25 mm. 
Alriada, gen. nov. 
Areolet pentagonal, twice longer along the radius and cubitus than 
along the transverse cubital nervures, the recurrent nervure received in 
the middle ; transverse median nervure received behind the transverse 
basal ; transverse cubital nervure in hind wings broken shortly below 
the middle ; disco-cubital nervure broadly rounded, unbroken. Metanotum 
smooth, shining, with two complete keels, the basal farther removed from 
the base than is the apical from the apex ; the spiracles small, almost 
circular. Mesonotal furrows extending from the base to the apex. Lower 
half of face bordered by wide, deep furrows. Clypeus separated from the 
face, slightly, broadly depressed in the middle. Labrum prominent, 
rounded below. Mandibles depressed in the middle at the apex. Occiput 
margined, not transverse. Eyes large, converging below ; the malar 
space short. Abdominal petiole becoming gradually, but not much, 
widened from the base to the apex, smooth, the second and third segments 
closely distinctly punctured, the second raised at the base. Antennae 
much longer than the body, slender, slightly thickened towards the apex, 
