in the British Museum. 109 
a large dark brown spot on the mesepisternum and a smaller, 
almost confluent, mark on the mesepimeron beneath the 
wing-root. Sternum with a large rounded black spot on 
the sides between the fore and middke cox. Halteres light 
brown, the knobs conspicuously light yellow. Legs with 
the cox reddish, the bases of the fore and hind cox 
blackened ; trochanters reddish ; femora obscure reddish, 
the tips broadly dark brown, broadest on the fore legs where 
they cover about the distal third, narrowest on the hind legs ; 
tibize light brown, the tips narrowly dark brown ; tarsi dark 
brown. Wings light ochreous yellow, the costal and sub- 
costal cells brighter ; stigma oval, dark brown ; wing-apex 
narrowly darkened ; veins dark brown. Venation: Rs a 
little longer than the deflection of R,,;; cell MM, broadly 
sessile ; m-—cu punctiform, inserted just before the fork of M. 
Abdominal tergites reddish, the lateral margins narrowly 
blackened ; tergite one black medially ; tergite two with 
a small spot near mid-length ; caudal margin of segments 
two to five with a conspicuous triangular black mark ; seg- 
ment six black with only a small, basal, sublateral, reddish 
area ; segments seven and eight black ; hypopygium reddish 
yellow ; sternites reddish yellow, segments six to eight 
largely black. Male hypopygium with the ninth tergite 
haying a narrow median notch, the lateral lobes thus formed 
very obtusely truncated, the margins provided only with 
a short pale pubescence; outer pleural appendage rather 
broad, the apex suddenly narrowed. 
Hab. British East Africa. 
Holotype, & , foot of Kikuyu Escarpment, altitude 7300 
feet, March 3, 1911 (S. A. Neave). B.M. no. 1912. 70. 
Type in the collection of the British Museum (Natural 
History). 
In its general appearance, the yellow-knobbed halteres, 
and other features, Nephrotoma ochripennis bears a consider- 
able resemblance to N. mossambica, Alexander (South-eastern 
Rhodesia), which is a larger species with the apices of the 
Wings pubescent and with the details of coloration different. 
Nephrotoma chapini pattersoni, subsp. n. 
Male.—Length 11°5 mm. ; wing 11°8 mm. 
Close to typical chapini, Alexander (Belgian Congo), 
differing as follows :— 
Occiput with a brown triangular area. Antenne rather 
elongate for an Ethiopian species of this genus, Stripes on 
