109 



by Loew (" Dipteren-Fauna Siidafrika's " (1860), p. 38) as Tabanus 

 bovinus ; but although Tabanus ustus, Walk., may well be the local 

 representative of the European T. bovinus, Loew, there are reasons 

 such as the very conspicuous, grey, admedian, abdominal spots, 

 and the absence of pale hind margins to the abdominal segments 

 for thinking that it is preferable to regard Tabanus ustus as a 

 distinct species. It may be noted that the type of Tabanus ustus, 

 Walk., is a male, and that of T. temperatus, Walk., a female. 



Up to the present time Tabanus ustus has been found in Cape 

 Colony, Natal, and North-Eastern Rhodesia ; but if, as seems 

 possible, Tabanus disjunctus, Ricardo (Annals and Magazine of 

 Natural History, Ser. 8, Vol. I., p. 325 (1908) ) is but a form of T. 

 ustus, Walk., the range of the species will also include North- Western 

 Rhodesia, the Congo Free State, and Uganda. 



The localities, etc., of the thirteen specimens of Tabanus ustus, 

 Walk., in the Museum are as follows. Natal. " Port Natal " 

 (types of T. ustus, Walk., and T. temperatus, Walk., and one 

 specimen collected by Gueinzius, before 1858) ; precise locality 

 unknown (received from J. F. Quekett, 1902). Kosi Bay, Zululand, 

 February and March, 1906, " on cattle " (F. Toppin). North-Eastern 

 Rhodesia : Muebe and Upper Lukula River, Luena District, September 

 4th and 29th, 1904, " a plague in places " (E. L. Harger). 



Tabanus nyasae, Ricardo. 



Annals and Magazine of Natural History, Ser. 7, Vol. VI., p. 164 



(1900). 



PLATE IX., FIG. 66. 



This species, which was described from a female from Fort 

 Johnston, Nyasaland Protectorate, in the collection of Mr. W. L. 

 Distant, is represented in the Museum Collection by a single female, 

 from Salisbury, Mashonaland, Southern Rhodesia, October 12th, 

 1900 (R. H. Thomas}. Tabanus nyasce, Ricardo, of which T. 



