180 | Miss G. Ricardo on the Asilidee. 
with black legs and a blackish abdomen, uniformly greyish- 
yellow pollinose. 
Promachus xanthotrichus, Bezzi. 
Ann. Soe. Ent. Belg. lii. p. 378 (1908). 
This appears to be only a variety of P. fasciatus, Fabr., 
the only difference being that all the bristles on the seu- 
tellum are yellow, not black. There are series of specimens 
with this from Nyasaland in the I. E.E. Coll. and in the 
Brit. Mus. Coll., one female from Portuguese Congo, two 
females from Mashonaland, and one male from E. Ruwenzori, 
but in some specimens a few black bristles appear. | 
Bezzi described one male from the Falls of Semlia River, 
Ngami, Congo. 
Promachus obscuripes, sp. n. 
Type (male). 
Type (female) im coitu, from Mt. Mlanje, Nyasaland, 
27. xii. 1912 (S. A. Neave), I. E. E. Coll., and a series of 
males and females from the same locality. 
A species recognized by its wholly black legs, with 
yellowish short pubescence, by the yellow moustache, and by 
the yellow hairs and black bristles on the scutellum. 
Length, ¢ 16-19, ¢ 17-19 mm. 
Male.—Face blackish with yellow-grey tomentum at sides. 
Moustache composed of long yellow bristly hairs. Pali 
with yellow and black hairs. Beard yellowish. Antenne 
blackish, the first two joints with yellow hairs. Forehead 
with black hairs. Hind part of head with yellow hairs and 
a few strong short black bristles on each side. Thorax 
with well-marked blackish stripes and greyish-yellow tomen- 
tum, the presutural bristles two in number, as are the supra- 
alar oves, but the post-alar are three in number, all black ; 
dorsum with weak black hairs and a few pale yellow ones 
interspersed. Scutellum with long yellow hairs and black 
bristles on its posterior border and on dorsum. Abdomen 
with the usual large black spots bordered by greyish tomen- 
tum ; weak yellow bristles are present on the sides of seg- 
ments and yellow hairs ; on dorsum the pubescence is short 
and yellow, longer on the first segment. Genitalia very 
large and stout; upper forceps swollen, club-shaped, the 
lower pair large, produced at the base, and ending in an 
obtuse point ; the lower plates black, shining, all with black 
pubescence. Legs blackish, the tibize on their outer sides 
