924 REPORT OF THE HARVARD AFRICAN EXPEDITION 
Liperia. — Gbanga, September 1926. Moylakwelli, October 27, 1926. 
Paiata, October 1926. Banga, October 1926. Kolobanu, October 19, 1926. 
Bomboma (Moala), October 31, 1926. The eyes in life are uniformly bright 
green. 
BELGIAN Coneo. — Leopoldville; Lubutu, January 1915; Walikale, Janu- 
ary 1915; Oso River, January 1915; Penge, February 1914; on the Congo 
River near Ukaturaka and near Lulonga, December 1926; Bumba, December 
1926; Coquilhatville, December 1926; Isangi, January 1927; La Lowa, Janu- 
ary 1927. Between Bolobo and Lukolela; Stanleyville; Garamba; Medje; 
Pawa (H. Lang and J. P. Chapin). Avakubi; Bafwasende; Mawambi (C. 
Christy). Kondué (Leonard; Luja). Dima (Koller). Lukula (Daniel). Miao 
(Baugniet). Lomami (J. Schwetz). Ingende (Mayné). Lukonzolwa (Stap- 
pers). Elisabethville (Overlaet). 
This species varies considerably in size, the total length being in Liberia 
from 18 mm. to 22 mm., and in the Belgian Congo from 20 mm. to 27 mm. 
T. ruficrus is almost restricted to the West African Subregion, but seems to 
extend into Upper Katanga. Although S. A. Neave (1912, Bull. Ent. Res., II, 
p. 315) lists it from Nyasaland, he gives no locality record from that territory 
and does not mention it again in his later publication on the tabanids of Nyasa- 
land. 
Tabanus canus Karsch 
Tabanus canus Karsch, 1879, Zeitschr. Ges. Naturwiss., LI, p. 377, Pl. IV, fig. 1 ( 9; Chinchoxo, 
Portuguese Congo). Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 110, Pl. IX, fig. 68 
Co). 
Tabanus multipunctatus van der Wulp, 1885, Notes Leyden Mus., VII, p. 72, Pl. V, fig. 2 ( 9; 
Chimfimo, Portuguese Congo). 
BELGIAN Conco. — Lisala (on the Congo River), December 26, 1926; Nou- 
velle-Anvers; Lulonga (on the Congo River); Oso River. Coquilhatville to 
Mondombe (Wilmin). Bandaie, Uele River (J. Rodhain). Lubulu (Burgeon). 
Elisabethville (Swalue). Medje; Avakubi; Poko; Stanleyville, two females 
and one male, as prey of Bembix bequaertt Arnold var. dira Arnold, March 1915 
(H. Lang and J. P. Chapin). 
Male (undescribed). — Length of body, 22 mm.; width of head, 8mm.; length of wing, 19 mm. 
Similar enough to the female so that the two sexes can be associated easily. The head is 
large and hemispherical and the eyes are contiguous for a long distance; a very distinct area of 
enlarged facets, occupying more than half of each eye and surrounded by small facets, most of 
which, however, are below. Triangle of vertex very small, yellow; frontal triangle mostly eray 
pollinose, but shiny brown above; proboscis short; palpi small, pale brown pilose. Antenna 
somewhat yellower and more slender than in the female, although the first segment is fully as large 
as in the other sex. Thorax slightly browner than in the female; stripes not so conspicuous, gray 
pollinose and brown pilose. Abdomen: dorsally, first segment brownish gray; second segment 
gray, with a rather large, roundish, mid-dorsal, brown spot, not reaching either border; third seg- 
ment gray, with four dark brown, contiguous spots on the anterior margin; fourth segment similar, 
but the two spots nearest the mid-dorsal line much reduced in size; fifth segment brown, with a 
large triangle at middle with its base on the posterior margin; other segments dark brown of the 
same color as the abdominal spots. Venter brown as in the female. Wings and legs as in the female 
although the latter appear browner on account of being less pollinose. 
One specimen from Stanleyville. 
