ENTOMOLOGY 933 
Tabanus wellmanii Austen 
Tabanus wellmanii Austen, 1908, Ann. Mag. Nat. Hist., (8) I, p. 225 ( ¢; Chiyaka district, Portu- 
guese West Africa); 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 113, Pl. X, fig. 74 (¢). 
Breuician Conao. — Renzi (Uele district), two females (J. Rodhain). Aru- 
wimi River, one female (U.S.N.M.). 
T. wellmanii is known only from Portuguese West Africa, Northern Rho- 
desia, and the Upper Belgian Congo. 
Tabanus argenteus Surcouf 
Tabanus argenteus Surcouf, 1907, Bull. Mus. Hist. Nat. Paris, XIII, pp. 264 and 334 ( ¢; Gaboon). 
Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 114, Pl. X, fig. 75 (9). 
Tabanus argentatus Surcouf and Roubaud, 1908, Bull. Mus. Hist. Nat. Paris, XIV, p. 222 ( 9; 
lapsus for T’. argenteus). 
BEeLGtIan Conao. — Kirundu, one female, February 1915. Sankuru, one 
female, April 1925 (J. Ghesquiére). 
T. argenteus appears to be strictly West African and is probably a species 
of the rain forest, where it possibly replaces the closely allied 7. wellmanii 
Austen. It is known from Sierra Leone, the Ivory Coast, Dahomey, Southern 
Nigeria, Cameroon, and the French and Belgian Congo. 
Tabanus sharpei Austen 
Tabanus sharper Austen, 1908, Ann. Mag. Nat. Hist., (8) I, p. 226 (9; Katumbe, northern 
Nyasaland); 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 113, Pl. X, fig. 73 (¢). 
In a former paper, I have referred to T. sharpei two specimens collected 
in Upper Katanga (Kalengwe and on the Lufira River). This rare fly is known 
only from Katanga, Northern Rhodesia, Tanganyika Territory, and Nyasa- 
land. According to Neave (1915, Bull. Ent. Res., V, p. 314) it is connected 
by intermediates with 7. insignis Loew, of which it is probably only a variety 
with a marked reduction of the abdominal spots. It should be noted that 
the true 7’. insignis has not yet been found in Katanga nor elsewhere in the 
Belgian Congo. 
Tabanus diversus Ricardo 
Tabanus diversus Ricardo, 1908, Ann. Mag. Nat. Hist., (8) I, p. 330 ( 9; Ruwe, Belgian Congo). 
Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 112, Pl. X, fig. 72 (¢@). 
BELGIAN Congo. — Minga, Katanga, October 1924 (C. Seydel). 
There are several other Congo records of this species, which seems to be 
strictly Central African (Katanga, Tanganyika Territory, Rhodesia, and 
Nyasaland). 
I now regard 7’. lufirensis J. Bequaert as a distinct species and not as a 
variety of 7’. diversus. 
Tabanus obscurestriatus Ricardo 
Tabanus obscurestriatus Ricardo, 1908, Ann. Mag. Nat. Hist., (8) I, p. 316 ( 9; Congo). 
This species is known only from the type, the correct locality of which is 
unfortunately not known. 
