436 Miss G. Ricardo on the Asilide. 
outstanding long bristles, a few red ones appear on posterior 
part of thorax and all the side-bristles are reddish. Seutellum 
with many very stout, long, black bristles in the centre, a 
dozen or more, and tufts of white hairs on each side. 
Abdomen denuded, the bristles are white, pubescence whitish. 
Genitalia simple, the upper forceps long but tapering to a 
point, which is, however, rather obtuse, covered with short 
white pubescence, the under pair short black with some 
long white hairs. Legs with white pubescence, the hind 
femora with yellowish bristles, the fore and mid tibiz with 
long yellowish hairs below, the hind ones with black hairs ; 
the bristles chiefly black, but long yellowish ones are present 
on the fore and middle pairs; the tarsi with almost wholly 
black bristles. 
Female identical, the white bristles on tibiz rather more 
numerous, also present on the hind pair. Oviposiior short, 
not much longer than the last segment. 
Length, J 18, ¢ 17 mm. 
Dysmachus nigricans, sp. n. 
Type (male) from Piet Retief, 4100 feet, Transvaal, 23. 
viii. 1908 (Capt. R. Crawshay). 
Type (female) and another from same locality and same 
collector ; all in Brit. Mus. Coll., 1904, 43. 
A small dark species with black mane, almost wholly 
dark legs and abdomen. Moustache black and white. 
Distinguished from Dysmachus montanus by the absence 
of white tomentum, white bristles on the abdomen, and of 
white bristles on the legs. 
Length, 3 133, 2 13 mm. 
Male.—Face black (denuded). Moustache large, extending 
to the antennz, composed of black bristly hairs with only a 
few stray white hairs. Antenne wanting. Forehead with 
many long bristly hairs. The curled bristles at back of head 
very long and stout, extending as weaker black bristles a 
little way round head, and followed by white hairs. Beard 
white. Thorax blackish, covered with brownish tomentum ; 
the median stripe is dark and distinct; the mane, wholly of 
black hairs and longer black outstanding bristles, is large . 
for such a small fiy and extends thickly to the scutellum, 
the pubescence on dorsum is scanty, of black and some white 
hairs. Scutellum armed with very Jong black bristles on its 
posterior margin and others inside, nine or ten in all, and 
some black hairs intermixed. Abdomen, somewhat denuded, 
