934 REPORT OF THE HARVARD AFRICAN EXPEDITION 
Tabanus atrimanus Loew 
Tabanus atrimanus Loew, 1858, Ofv. K. Vet. Ak. Férhandl., Stockholm, XIV, (1857), p. 340 
(9; Caffraria); 1860, ‘Dipteren-Fauna Siidafrikas,’ p. 40, Pl. I, fig. 22 (¢). Sureouf, 1909, 
Et. Monogr. Taban. Afrique,’ pp. 150 and 160, PI. III, fig. 12 ( @). 
BELGIAN Conco. — On the Congo River near La Lowa, January 16, 1927. 
Kisantu (Vanderyst). Between the Lufupa and Lubudi rivers (S. A. Neave). 
Lomami (H. Wilmin). Luebo (H. Schouteden). Basoko to Stanleyville (J. 
Ghesquiére). 
T. atrimanus occurs in southern and eastern Africa and extends westward 
over the Belgian Congo. Curiously enough, there is no record from the Gaboon 
and the species has never been taken in West Africa proper. 
In seven females taken near La Lowa, the eyes in life were greenish purple 
with a narrow, dark purple, median cross-band, as shown in a figure I have 
published in 1913 (Rev. Zool. Afric., IJ, 3, p. 461, fig. 3). 
Tabanus variabilis Loew 
Tabanus variabilis Loew, 1858, Ofvers. K. Vet. Ak. Férhandl., Stockholm, XIV, (1857), p. 340 
(9; Caffraria); 1860, ‘Dipteren-Fauna Siidafrikas,’ I, p. 41, Pl. I, fig. 23 (¢). Austen, 
1909, ‘Illustr. African Blood-Suck. Flies,’ p. 116, Pl. X, fig. 73 (¢@). 
BELGIAN Conao. — Uere River; Bwasabi (Uele) (J. Rodhain). Elisa- 
bethville, one female, October 1921 (Mich. Bequaert). Kambove; Lufupa 
River to Lubudi River (8. A. Neave). 
NORTHERN RuopeEsia. — Kafue River, two females, October 22, 1923 
(Mich. Bequaert). 
T. variabilis is one of the rarer species, but appears to be widely distributed. 
There are records from the Ivory Coast, Cameroon, French Congo, Belgian 
Congo, Uganda, Kenya Colony, Tanganyika Territory, Northern Rhodesia, 
Nyasaland, Portuguese East Africa, and Cape Colony. It appears to be a 
species of savanna country. 
T. varians Sureout (1900, Bull. Mus. Hist. Nat. Paris, XV, p. 354; 0; 
Brazzaville, French Congo), known only from the type, seems to be doubt- 
fully distinct from 7’. variabilis. It should be noted that the latter species was 
also recorded from Brazzaville. The chief character of T. varians appears to 
be the absence of brownish lateral spots in the white covering on the anterior 
corners of the second tergite. 
Tabanus gratus Loew 
Tabanus gratus Loew, 1858, Ofvers. K. Vet. Ak. Forhandl., Stockholm, XIV, (1857), p. 340 
(9; Caffraria). Austen, 1909, ‘Illustr. African Blood- Girele Flies,’ p. 114, PL Xx, te, 76°C 0), 
There are a few Belgian Congo records of this species which appears to 
be distributed over the entire Ethiopian Region, from the Gambia and Anglo- 
Egyptian Sudan to the Cape. 
Tabanus tritaeniatus Ricardo (1908, Ann. Mag. Nat. Hist., (8) I, p. 311; 
9; Bailundo, Benguela) is a little-known species closely allied to r. gratus. 
Laveran (1908, Bull. Soc. Path. Exot., I, p. 253) has recorded it from La Romée, 
