1016 REPORT OF THE HARVARD AFRICAN EXPEDITION 
10. Tibiae conspicuously dark brown; Rs relatively short, less than R3. 
Lé (Cameroon) fulvithorax Alexander. 
Tibiae yellow, the tips weakly darkened; Rs longer than Rs. 
(Belgian Congo: Itimbiri) schoutedent, sp. Nn. 
Lecteria triacanthos Alexander 
1920. Lecteria triacanthos Alexander; Ann. Mag. Nat. Hist., (9) 5:59-61. 
Several of both sexes from Firestone Plantation No. 3, right bank of the Du 
River, Liberia, July 26, 1926 (J. Bequaert). 
Trentepohlia (Trentepohlia) speiseri africana, new subspecies 
PF emale. — Length about 7-8 mm.; wing 6 mm. 
Described from alcoholic specimens. 
Differs from typical speiseri Edwards (Ann. Mag. Nat. Hist., (8) 12 : 204, fig.; 1913) of southern 
Asia chiefly in details of coloration. 
Rostrum pale, both palpi dark brown. Antennae dark brown throughout. Mesonotal praes- 
cutum reddish yellow with three well-indicated brown stripes; scutellum and postnotum darker 
brown. Pleura dark brown. Legs chiefly yellow, the tips of the femora and tibiae slightly darkened; 
posterior tibiae (?) with three powerful black setae just before tips; terminal tarsal segments 
darkened. Wings with a heavy brown pattern, the area above the anterior cord very broad, 
reaching the costa and without a pale center; pale central area of cell Rs very restricted; brown 
seams along the cord, Cu and R; very broad and conspicuous. Venation: Rs subequal to the 
basal section of R;. 
Hab. Tropical Africa, Lrppria. 
Holotype, alcoholic ¢, Firestone Plantation No. 3, right bank of the Du River, 
July 27, 1926 (J. Bequaert). 
I feel assured that the African material that has been referred to speiseri 
represents at least a distinct race, characterized by the distinct praescutal stripes 
and the more darkened tips to the femora and tibiae. Edwards (loc. cit.) re- 
corded it from the Gold Coast, Sierra Leone, Belgian Congo, and Uganda. Speiser 
(Berlin. Ent. Zeitschr., 52:135; 1907, as exornata) recorded it from Cameroon. 
I have seen it from several Cameroon stations and the fly appears to be common 
and widely distributed. By my key to the African species of T’rentepohlia (Rev. 
Zool. Afric., 14:177-180; 1926), the form runs to speiseri, but difficulties are 
encountered at couplet 21 because of the slightly darkened femoral tips. 
Trentepohlia (Mongoma) albilata Alexander 
1920. Trentepohlia (Mongoma) albilata Alexander; Ann. Mag. Nat. Hist., (9) 5: 56-58. 
One of each sex from the Firestone Plantation No. 3, right bank of the Du 
River, Liberia, July 27, 1926 (J. Bequaert). 
Gonomyia (Gonomyia) liberiensis, new species 
General coloration dark brown; antennal scape pale yellow above, dark brown beneath; 
thoracic pleura striped longitudinally with whitish; femora with a broad subterminal brown ring; 
wings grayish, variegated with whitish and darker brown; outer radial and medial cells uniformly 
erayish; posterior margins of abdominal segments whitened; male hypopygium with three dis- 
tistyles, the outer two elongate and chitinized. 
Male. — Length about 4 mm.; wing 3.5 mm. 
Female. — Length about 5 mm.; wing 4-4.2 mm. 
Described from alcoholic specimens. 
