115 



Sudan, and Egypt, and north-westwards to Upper Senegal and 

 the Gambia. The locahties, etc., of the ten females in the 

 Museum Collection are as follows. — Nyasaland Protectorate : 

 Ciiinia River, "in the hills," May 5th, 1909 {Dr. E. II. A. Pask). 

 Uganda : Fajao, Victoria Nile, November, 1904 {Captain 

 E. D. W. Greig, I. M.S.); Nimule, Nile Province, 1900 {the 

 late Dr. W. A. Densham). Northern Nigeria : near Yola, 

 April 14th, 1905 {W . F. Gowers) ; Kontagora, January 28th, 

 Ruka, July 17th, and Benue River, August, 1907 {J. Brand). French 

 Sudan : locality unknown (received from M. J. R. M. Surcouf). 

 According to Todd and Newstead,* Tahanus gratus, Lw., was met 

 with in March, 1903, " on the Kunchau Creek, about 175 miles up 

 the Gambia River," by the Expedition of the Liverpool School of 

 Tropical Medicine to Senegambia. 



In his field-note on this species, as encountered by him in the Nile 

 Province of Uganda, the late Dr. Densham ^\Tote : — " Seen several 

 times at and near Nimule : taken on natives and on a dog. Eyes 

 in living insect a beautiful greenish blue, with horizontal zigzag 

 bands of crimson-purple." In French Congo, Tahanus gratus is 

 stated by Surcouf and Roubaud to be common on cattle at Brazza- 

 ville at the beginning of the rains. f 



Tabanus laverani, Surcouf. 



Bulletin du Museum National d^Histoire Naturelle, Annee 1907, 



p. 331 (Paris, 1907). 



Plate X., fig. 77. 



So far as is indicated by the specimens already received, the range 

 of this West African species extends from the Gambia to Northern 

 Nigeria. The following are the localities, etc., of the ten females 

 in the National Collection. — Gambia, precise locaUty unknown, 

 1906 {Dr. E. Hopkirison, D.S.O.). French Guinea : Lower Rio 



* Cf. Newstead, Button and Todd, Annals of Tropical Medicine and Parasitology, 

 Series T.M., Vol. I., No. I., p. 45 (February 1, 1907). 



t Cf. Surcouf and Roubaud, Bulletin du Mtisi-um National d'Histoire Xaturelle, 

 Ann6e 1908, No. 5 (Paris, 1908). 



