in the British Museum. 101 
sternite with a deep median notch. EHighth sternite with- 
out a median emargination and long bristles as in N. che- 
topyga. The female has the valves of the ovipositor dark 
chestnut-brown.: 
Hab. Uganda. 
Holotype, 3, Western iets: altitude 4500-5000 feet, 
October 10-14, 1911 (S. A. Neave). 
Presented by the Imperial Bureau of Entomology, 
1915. 57. 
Allotopotype, 2. 
Paratopotype, 3 » paratypes, 2 2’s, West Shores of Vic- 
toria Nyanza, Buddu, altitude 3700 feet, September 19-25, 
1911 (S. A. Neave) ; a broken 2, Northern Buddu, altitude 
3800 feet, September 16-18, 1911 (S.A. Neave); 3, Mabira 
Forest, Chagwe, altitude 3500-3800 feet, July 16-25, 1911 
(S. A. Neave); 2, Daro or Durro Forest, Toro, altitude 
4000-4500 feet, October 25-29, 1911 (S. A. Neave); 9, 
Tero Forest, July 9, 1912 (C. C. Gowdey). 
Type in the collection of the British Museum (Natural 
History). 
The paratype females show more yellow at the humeral 
angles, this encroaching conspicuously upon the pleural 
region. With more material, these may be found to re- 
present a distinct species. 
Nephrotoma chalybea, sp. n. 
General coloration black; head deep orange; humeral 
angles of preescutum broadly yellow; cephalic half of post- 
notum and extensive areas on the pleura yellow ; postnotum 
and scutellum clothed with short, conspicuous, black hairs ; 
halteres with the knobs yellow apically ; tibize conspicuously 
paler than the femora ; wings yellowish brown, the costal 
margin slightly darker ; macrotrichiz in the apex of cell R; 
reduced to one or two or lacking; abdomen shiny blue- 
black, the caudal margins of the segments velvety black ; 
tergites one to four with a conspicuous reddish mark on 
the sides at the base; male hypopygium with the eighth 
sternite entire, not conspicuously hairy. 
Male.—Length 14:2 mm.; wing 146 mm.; antenne 
about 6 mm, 
Female—Uength 18-185 mm.; wing 15:4-15°6 mm.; 
abdomen alone about 13°8-14 mm. 
Frontal prolongation of head yellow, the dorsum and 
nasus conspicuously liver-coloured ; mouth-parts pale flesh- 
coloured ; palpi brown, paler basally. Antenne moderately 
