Bombyliidae (Diptera) from Central Africa. 647 
near the hind margin of the segments ; last segment with a very 
dense marginal black fringe. Genitalia of the male of larger size, 
red, with yellow hairs; genitalia of the female with red spines. 
Legs dark reddish, but the tarsi and the hind femora are darkened ; 
claws red at the base, witha red tooth ; bristles and pubescence black. 
Wings hyaline, with yellowish veins, which are darkened only near 
the end ; basal comb very large, dark reddish and with a short black 
fringe ; the base and the costal cell brownish ; the subcostal and the 
first basal greyish ; the small cross-vein and those on the base of fourth 
and third posterior cells (this last only near the extreme base) are 
narrowly margined with fuscous. First posterior cell a little nar- 
rowed at the end, the three others of almost equal width ; the first 
posterior cell is very narrowed near the base ; the nervure dividing 
the discal from the third posterior cell is very sinuous ; small cross- 
vein placed in the middle of the discal cell. 
Type f and §, and three additional specimens from 
North Nyasa, near Deep Bay, October 3 and 4, 1909 (Dr. 
J. B. Davey); another ¢ specimen from Nyasa, October 21, 
1910 (Dr. J. E. S. Old). 
66. Hxoprosopa stannusi, sp. nov. (Plate L, fig. 23.) 
gd. length of the body (of 5 specimens) 15-16 mm., of the wing 
14-15 mm. 
A species also near EH. major, but with red legs; distinguished 
from the preceding by the smaller size and the black antennae. 
Head black, reddish only on the face, on the lower portion of the 
frons and along the margins of the mouth ; hairs of the face yellow, 
those on the frons black; antennae short, black, the first joint 
clothed with black hairs; the third greyish, conical, with the style a 
little shorter. Proboscis black. Thorax black, with yellowish hairs 
and some black hairs in the middle of the back; bristles black ; 
squamulae yellowish and with a yellow fringe; halteres whitish. 
Seutellum black, with black marginal bristles. Abdomen yellowish- 
red, with grey pubescence; venter concolorous; a broad median 
black stripe which extends from the first to the sixth segment; 
moreover there are black cross-bands, with black tomentum at the 
hind margin of the segments ; the hairs along the sides are pale, but 
there is a tuft of black hairs on a line with the black cross-band of 
each segment ; last segment with a black fringe. Genitalia red, 
with yellow and black hairs. Legs paler yellowish-red, the tarsi 
darkened and the claws with a red tooth ; knees black ; bristles 
black, but the tomentum is yellowish. Wings greyish hyaline, the 
base and the fore border to the fourth longitudinal vein, extending 
UU 2 
