102 Miss G. Ricardo on 
the upper half of the anal cell, the lower half of the latter 
and almost the whole of the second basal cell being clear ; 
veins yellowish red on the basal half, and then brown ; the 
small cross-vein is in the middle of the discal cell, and 
the base of the second longitudinal is below it, the first 
posterior cell is narrowed at its opening. 
Length 14 millim. 
Types, male, Fort Johnston; female, Delagoa Bay, in 
British Museum Collection. 
The female differs slightly in the wing, but is evidently 
the same species. The pubescence on the first two joints of 
the antenne is yellow on the underside; the red on the 
abdomen is not so marked, being chiefly on the second and 
third segments, the last two are black with the posterior 
borders red. The wings are paler in colour, the yellowish 
red becoming faint brown, and there is dark shading round 
the vein which divides the discal from the second posterior 
cell, not present in the male. 
Length 13 millim. 
Division II,—The discal cell with an angle, from which a branch is 
emitted into the third posterior cell. 
Ezxoprosopa angulata, Loew, Dipt. Siidafrik. p. 242 (1860). 
One male from Cape Town. 
Division III.—The discal cell with an angle, from which a vein is 
emitted which divides the third posterior cell into two cells. 
Exoprosopa dubia, sp. un. 
Four males and five females from Pretoria (W. L. D.). 
The wing is very similar to that of HL. reticulata, Loew. 
Black. 
Face with black pubescence and white scaly hairs. 
Antenne with black hairs on the first two joints; the bristle 
short and stout, barely half as long as the third joint. Hind 
part of head with some white scaly hairs. Collar composed 
of yellow hairs above, black beneath; the pubescence on the 
sides of the thorax and on the breast is black, with a few 
yellow hairs on the anterior part of the thorax, on the dorsum 
of the thorax it is black, with ye!low scaly hairs forming a 
stripe on the extreme lateral margins. Scutellum with 
black bristles and some yellow scaly hairs. Abdomen with 
white hairs on the side of first segment, and black on the 
others; on the dorsum the white scaly hairs are chiefly on 
the sides of the segments, the last two are almost entirely 
