154 



that the range of S. nigra does not extend so far to the north and 

 south as that of *S^. calcitrans, throughout Tropical Africa at any rate 

 the present species, which swarms in many localities, may be said 

 to be generally distributed. Beyond the confines of Africa Stomoxys 

 nigra, Macq., occurs in Reunion I., whence the type of the species 

 was obtained, in Mauritius,* where it is beUeved to disseminate 

 surra among domestic animals, and in the Seychelles Is., while 

 what appears to be a form of the species has been found in Calcutta. 

 The locahties, etc., of the African specimens of S. nigra in the 

 National Collection are as follows. — Gambia : Salikenny, April 22nd 

 and 23rd, 1903, "caught in stable " and "feeding on horse " [the 

 late Dr. J. E. Dutton and Dr. J . L. Todd). Sierra Leone, August 

 12th, 1904, " on window " {Major F. Smith, D.S.O., R.A.M.C.). 

 Ashanti : Kumasi, 1905 {Dr. H. A. Chaplin), and January 25th, 



1905, "on horse" {Lieut.-Col. G. M. Giles, late I.M.S.); Obuasi, 

 April 16th and 18th, and June 14th, 1906, June 5th, 1907 (" caught 

 on oxen "), and June Uth, 1907, " in empty hospital " {Dr. W. M. 

 Graham, W.A.M.S.). Gold Coast : Sekondi, October 16th, 1906 

 {Dr. W. M. Graham). Northern Nigeria : Zaria, 1904 {Captain F. U. 

 Carr, A.V.D.) ; Ndeji Guzan, Nupe Province, June 12th, 1907 

 {E. C. Duff) ; Kef!i, Nassarawa Province, June 15th-24th, and 

 September 30th, 1907 {Dr. R. F. Williayns, W.A.M.8.). Southern 

 Nigeria : Lagos Province, on railway at 85 miles camp, June 7th, 



1906, " plentiful in stable " {Dr. R. C. Hiscock, W.A.M.8., per 

 Dr. W. H. W. Strachan, C.M.G.). Congo Free State : Nouvelle 

 Anvers, September 26tli, 1903, and " caught on shot buffalo, four 

 hours in canoe north of Sendwe, November 9th, 1904 " {Drs. 

 Dutton, Todd, and Christy). Anglo-Egyptian Sudan : Kodok, 

 Upper White Nile, July, 1907, "in swarms " {H. H. King) ; Dem 

 Zobeir, Bahr-El-Ghazal, 1903 {Captain G. S. Nickerson, R.A.M.C., 

 attached E. A., per the late Major T. E. N. Lewis, A.V.D.). East 

 Africa Protectorate : Ngatana, 1893 {Dr. J. W. Gregory) ; Machakos, 



* Stomoxys lafonti, Picard {Bulletin de la Socii'tc Entomologique de France, Seance 

 du 23 Janvier, 1907, p. 28), from Mauritius, is a synonym of S. nigra, Macq., as 

 I have been able to convince myself by comparing specimens forwarded by M. Picard 

 with the typo of S. nigra, kindly lent by Mr. G. H. Verrall, in whose possession it 

 now is. Macquart evidently failed to notice that his type is discoloured, and the 

 description of the abdomen as " d'un noir mat " is misleading. 



