900 REPORT OF THE HARVARD AFRICAN EXPEDITION 
The only specimens known from the Belgian Congo were obtained near 
Bukama in the Katanga: the females were biting an antelope (Kobus vardont), 
while a male was found resting on the culm of a grass. 
C. stigmaticalis is, in my opinion, strictly East and South African, being 
known positively from Eritrea, Abyssinia, Somaliland, Southern Rhodesia, the 
Katanga, Portuguese East Africa, Transvaal, Natal, Orange Free State, and 
Cape Colony. I have seen males from Colubi, Abyssinia (G. Kristensen. — 
D. Ent. Mus. Dahlem). Krober alone records this species from West Africa 
(Mangu Jendi in Togo and Ebolowa in Cameroon), but I suspect that these 
specimens were C. distinctipennis Austen, which is the West African representa- 
tive of C. stigmaticalis. 
Chrysops distinctipennis Austen 
Chrysops distinctipennis Austen, 1906, ‘Second Rept. Wellcome Res. Labor. Khartoum,’ p. 53, 
Pl. IV (¢; Usoga, Uganda); 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 46, Pl. II, fig. 12 
(9). Neave, 1912, Bull. Ent. Res., III, p. 286, Pl. XI, fig. 8 (9). Kroéber, 1927, Zool. 
Jaheb., Abt. Syst., LIT, pp. 178, 186, and 250, Pl. VY, fie, 32. Pl. VL tigi (ec). 
BELGIAN Conco. — Faradje, one female, April 1911 (H. Lang and J. P. 
Chapin). Uere River (J. Rodhain). 
The true C. distinctipennis is, I believe, restricted to the West African Sub- 
region where it occurs in the rain forest proper as well as in the forest galleries 
of the savanna country. There are definite records from Gambia, the Gold Coast, 
Togo, Northern Nigeria, the French and Belgian Congo, the Bahr-el-Ghazal 
District of the Anglo-Egyptian Sudan, Uganda, and the Kavirondo district of 
Kenya Colony, all of which are within the limits of the West African Subregion. 
There are only three records from outside that area: one female of the Paris 
Museum (determined by Austen) said to have been taken near Lake Marguerite, 
Abyssinia; one female, also of the Paris Museum (determined by Krdéber), 
supposedly from the Sahel of Mauretania; and a record ‘“ Bulawayo,” by Kréber, 
the origin of which is unknown. Neave (1912) includes the species in his list of 
tabanids of Nyasaland, but I have not found a definite locality record from that 
territory. 
Kroéber’s account of C. distinctipennis is very confused and contains some 
manifest errors. In his key (p. 186) he places it in the group of C. longicornis, 
although it is very closely allied to C. stigmaticalis, both species having the same 
clear spots in the fourth and fifth posterior cells. On p. 250 he describes as a 
male what appears to have been a female, since he states that the frons is broad, 
while his description of the wing does not fit Neave’s figure of the male. More- 
over, he writes here that the fourth and fifth posterior cells are almost entirely 
hyaline, thus contradicting his figure (Pl. IV, fig. 32) which certainly does not 
represent the wing of C. distinctipennis. 
Neave’s statement (reproduced by Kroéber) that in C. distinctipennis “the 
eyes of the male are small, and only partially meet in the middle line,” is con- 
tradicted by his figure, which shows the eyes plainly separated by the narrow 
frons. 
