20 J. W. SCOTT MACFIE — THE DISTRIBUTION OF GLOSSINA 



as soon as they show definite signs of sickness. Camps also should be instituted 

 near every large town and European station, in which sick horses, donkeys, and 

 any other animals that it was inadvisable to slaughter, might be isolated. 



Great importance has recently been attributed to the role played by big game 

 in the spread of trypanosomiasis. It should undoubtedly be determined what 

 forms of trypanosome they harbour in Northern Nigeria ; but before undertaking 

 extensive measures to drive back the game from the inhabited areas some exper- 

 iment on a large scale should be carried out on the lines suggested by Dr. Yorke. 

 It is perhaps unnecessary to insist that, in view of the discoveries of Kinghorn 

 and Yorke in Rhodesia, the destruction of big game in the vicinity of native 

 towns and European stations should be encouraged instead of being artificially 

 restricted. 



I have to thank Mr. P. M. Dwyer and Mr. E. C. Duff, the Residents 

 successively in charge of the province, and all the officers of the Administrative 

 Department at Ilorin for their hearty co-operation, and especially Mr. R. Scott 

 Chapman, Mr. T. A. G. Budgen, and Mr. C. S. Burnett, who when on tour in 

 their respective divisions, and in addition to their arduous duties, undertook the 

 supervision of natives trained by me to collect biting flies. Their assistance 

 brought within my reach even the most remote parts of the province, and 

 enabled me to obtain specimens from practically every inhabited district. 1 am 

 also indebted to Mr. Budgen for very kindly taking the photographs which 

 illustrate the tsetse-haunts in the eastern division of the province, and to 

 Mr. O. Vetter for permission to reproduce his photograph of Eri. 



With but few exceptions the identifications of all the tsetse-flies in the collec- 

 tions referred to in this paper have been confirmed by Mr. Guy A. K. Marshall 

 to whom I wish to tender my most sincere thanks both for carrying out this 

 tedious and difficult work, and for his unfailing kindness and encouragement. 



Synopsis of localities in Ilorin province, Northern Nigeria, in which 



Tsetse-flies were taken during 1 1912.* 



Western Division. 



Abankola, Lanwa district 



... vi. 



P. 



Agbaku 



... 



vii. 



T. 



Abeokuta, near Bangbuse 



. . . vii. 



T. 



Agbiyangi, and between Agbij 



'angi 







Ademu, near Shari 



. . . viii. 





and Akibiori 



... 



X. 



P. 



Adibongo ... 



vi. 



P. 



Agbona 



.. . 



vi. 



P. 



AdiOj Pools at 



... viii. 



P. 



Agodi, Small stream near 



. . . 



viii. 



T. 



Adio, Busamu River near 



... viii. 



P. 



Agodi, Pools in a stream-bed 



near 



viii. 



P. 



Adiosun 



... vi. 



P. 



Agoki 



. • • 



vi. 



P.,T. 



Adiosun 



... vii. 



P. 



Agorombi ... 



... 



vi. 



P. 



Adukensi ... 



. . . vii. 



T. 



Aitoru. Between Aribi 



and 







Afonkeke, Oke Oyi district 



vi. 



P. 



Aitoru, near the latter ... 



... 



ix. 



P. 



Afonkeke ... 



... vii. 



P.,T. 



Aitoru 



... 



ix. 



P. 



Agara or Agura 



... ix. 



P. 



Ajidungari ... 



. .. 



ix. 



P. 



Agbabiaka, Yalu River near 



... ix. 



P. 



Akata 



... 



ix. 



P. 



Agbadamu ... 



... ix. 



P. 



Akata, Oyun River near ... 



... 



ix. 



P. 



• In this synopsis the following abbreviations are used :— P. for Glossina palpalis ; T. for 

 G. iachinoides ; M. for G. submorsitans ; L. for G. longipalpis. The month in which the species 

 was observed is indicated by Roman numerals. 



