in the British Museum. 99 
the legs broken. Wings with a strong brownish-yellow 
tinge, cells C and Sc more saturated ; stigma oval, dark 
brown ; obliterative areas before the stigma and across the 
inner end of cell Is¢ M4, ; veins dark brown; apices of cells 
R; and M, with macrotrichiz. Venation : (ts nearly straight, 
a little shorter than R,,3; cell J/; narrowly sessile ; fusion 
of M and Cu, about equal to that section of M beyond it. 
Abdominal segment one black ; two to five dull red, the 
caudal and lateral margins broadly black; six to nine 
entirely black ; outer pleural appendage obscure yellow. 
Ninth tergite entirely b'ack, with a deep, U-shaped median 
notch, the lobes thus formed oblique, terminating in a large 
apical point, the margin provided with numerous blackened 
denticles. Onter pleural appendage long and _ narrow, 
gradually tapering to the subacute apex. Penis-guard 
straight, moderately broad at the base, subtended on either 
side by a slightly longer, slender, flattened apophyse. 
Kighth sternite rather extensive, the apex broadly emar- 
ginate, the caudal angles conspicuously fringed with long, 
coarse, curved bristles that are directed proximad, the base 
of the notch with more delicate, long, yellowish bristles. 
Hab. British East Africa. 
Holotype, 3, Gelegele River, June 1913 (A. O. Luckman), 
Presented by the Imperial Bureau of Entomology, 1917. 
33. 
Type in the collection of the British Museum (Natural 
History). 
Nephrotoma albonigra, sp. 0. 
General coloration black ; head deep orange; humeral 
angles of preescutum, cephalic portion oi postnotum, and 
a large area on the pleura before the halteres yellowish ; 
halteres uniformly dark brown; wings brown, the costal 
region more suffused ; macrotrichiz in the apex of the cell 
R; generally numerous; abdomen entirely black, the basal 
half of the segments more blue-black, the caudal half 
velvety black ; male hypopygium with the eighth sternite 
entire, the margin not conspicuously hairy. 
Male.—Length 12°4 mm.; wing 13 mm. ; antenne about 
7 mm. 
Female.—Length about 16 mm.; wing 13°8 mm. 
Frontal prolongation of head short, light yellow, the nasus 
and a spot surrounding its base dark brown ; palpi black, 
the base of the first segment paler. Antenne rather long, 
Ff 
