Diptera from South Africa. 97 
is wholly red; there is a short line of white scaly hairs on 
the posterior border of the first segment, and on the anterior 
border of the second, and an oblong spot of thick white scaly 
hairs on the posterior border of the third segment; the last 
two segments are more or less covered with white scaly hairs ; 
the pubescence on the dorsum of abdomen consists of short 
black hairs; on the sides the hairs are white on the first 
segment and black on all the others. Underside of abdomen 
red, the dorsal black stripe faintly marked, the pubescence 
black, with white pile. Legs red, with black pubescence and 
bristles. 
The shading of the wings is allied to that of . macroptera, 
but the band on attaining the margin only borders it for a 
short distance, from the junction of the vein dividing the 
second and third posterior cell to half the width of the latter 
(in one of the specimens it extends through three quarters of 
the width of the cell and above its junction with the second 
posterior) ; on its upper border it does not extend so high, 
not reaching the base of the anterior fork of the third vein ; 
when it reaches the second longitudinal vein it makes a sharp 
turn and follows the bend of the second longitudiaal vein 
to where it ends in the border of wing, extending a little 
beyond it, and entirely filling up the space enclosed by the 
vein ; the colouring of the shading is brown and the veins 
brown; the vein dividing the second and third posterior cell 
is curved more at its upper than its lower end, differing in 
this from macroptera. 
Length 13 millim. 
Types (male and female), Fort Johnston, Nyasaland 
(Rendall). 
The female is similar to the male, with the exception of 
the abdomen, which is darker; from the fourth segment the 
black colour entirely predominates; the scaly hairs are 
yellow and more abundant; the underside is red, with 
yellowish pubescence, only a few black hairs being inter- 
mixed, and the scaly hairs are yellow. 
Length 12 millim, 
Exoprosopa basalis, sp. n. 
Type (male), from Figtree Creek, Barberton (Rendall), 
resembles the above species, but the wing is different, nearly 
the same as that of HE. macroptera, and the abdomen is 
redder. 
Abdomen with the first segment red at the sides, the 
black triangular spots do not extend beyond the fifth 
Ann. & Mag. N. Hist. Ser. 7. Vol. vii. 7 
