101 



R.N.). Gold Coast : one male and one female, Sekondi, August 

 18th, 1906 (Dr. W. M. Graham, W.A.M.S.) ; Axim, " caught on 

 dredge on Ancobra River, April, 1907 " (received from Dr. W. M. 

 Graham). Southern Nigeria : Lagos, 1899 (Dr. W. H. W. Strachan, 

 C.M.G.) ; Bonny, July, 1872 (J. J. and Mrs. Monteiro) ; Sapele, 

 April, 1906, and Warri, May, 1906 (0. C. Dudgeon) ; Old Calabar, 

 1895 (the late Miss Mary H. Kingsley), and April, 1907 (Major F. 

 R. W. Sampson). " Congo " (ex Saunders Collection). 



Tabanus socialis, Walk., of which T. nigrohirtus, Ricardo (Annals 

 and Magazine of Natural History, Ser. 7, Vol. VI., p. 165 (1900)), 

 is a synonym, may possibly be identical with T. testaceiventris, 

 Macq. (1847). Macquart's description, however, is not sufficiently 

 definite to enable a positive opinion to be formed, and the locality 

 of his species is given by him merely as " Afrique," without any more 

 precise indication. 



Writing of this species as met with in French Congo, by the 

 members of the French Expedition to French Congo for the Study of 

 Sleeping Sickness, M. Roubaud says : " Very common at 

 Brazzaville, where it bites man. EspeciaUy numerous during the 

 transitional period at the end of the dry season ; appears sporadi- 

 cally during the remainder of the year Taken in numbers 



on the banks of the Upper Alima, rarer on the Lower Alima : a per- 

 tinacious biter of human beings."* 



Tabanus fraternus, Macquart. 



Memoires de la Societe Royale des Sciences, de V Agriculture et des 

 Arts de Lille, Annee 1844, p. 159 (Lille, 1846) : Dipteres Exo- 

 tiques, Supplement, p. 31 (1846). 



PLATE VIII., PIG. 58. 



Tabanus fraternus, Macq. (syn. T. bipartitus, Walk., and T. 

 trisignatus, Lw.), the type of which is stated to have been collected 



* Of. Surcouf and Roubaud, Bulletin du Museum National d'Histoire Naturelle, 

 Ann6e 1908, No. 5 (Paris, 1908) (" Tabanus nigrohirtus. Ricardo "). 



