118 Annals of the South African Museum. 



is one-third as long as the mesonotum ; the epinotum is rounded, 

 its dorsum shorter than the scutellum. The node of the petiole is 

 wider behind than in front, rounded above and at the sides, the 

 ventral lamella densely fimbriated and produced into a triangle, 

 blunt at the apex. First to 5th abdominal segments wider than long, 

 each segment a trifle longer than the preceding, 6th segment longer 

 than wide, wider at the base and narrowing towards the rounded 

 apex. Genital armature castaneous and very shining. Seen from 

 below, the external margins of the volsella are shallowly concave 

 from base to near the apex, and fringed with long hairs; stipites 

 strongly convex above. Wings slightly yellowish brown, nervures 

 brown. 



? . Two specimens of this sex, belonging to the South African 

 Museum, have been examined. One is preserved dry, the other in 

 spirit. The former appears to have retained the natural proportions 

 more truly than the other, and the following description is based 

 on the dry specimen, except where the other is specifically 

 mentioned. 



Length, from apex of opened mandibles to apex of hypopygium, 

 39 mm. ; length of head, from anterior margin of clypeus to the 

 occipital margin, 3'7 mm. dry specimen, 3'8 mm. spirit specimen ; 

 length of thorax 5 mm.; width of thorax, 4 - 5 mm. dry specimen, 

 5 mm. spirit specimen; length of abdomen from base of 1st segment 

 to apex of pygidium, 25-2 mm. 



The colour is much lighter in the spirit specimen, in which also 

 the thorax is not much darker than the abdomen. In the dry speci- 

 men the abdomen is pale castaneous or a pale burnt-sienna, the head 

 and thorax dark castaneous red, mandibles piceous in their inner 

 margins, the hypopygium piceous on the external margins. The 

 sides of the hypopygium rather dull, the rest of the insect very 

 smooth and shining, and sparsely punctured with very small 

 punctures. The punctures on the head and pronotum are a little 

 larger than elsewhere ; the sides of the pronotum posteriorly closely 

 punctured, sub-opaque. Head one and three-fifths as wide as long, 

 as wide in front as behind, sides convex, posterior margin moderately 

 and angularly emarginate, posterior angles rounded but prominent. 

 The dorsum of the head, seen from the side, is slightly flattened, 

 the median groove arising from the occipital margin is almost 

 obsolete above ; there are three very small depressions above, 

 marking the position of the atrophied ocelli. Clypeus depressed 

 above the anterior margin, which is straight ; frontal carinae short, 

 raised in front, divergent behind, between them lies a round depres- 



