DISTEIBUTION OF GLOSSINA TABANIFORMIS. 83 



wanting, hind tibiae witli no ti'ace of a brown blotch on outer 

 side at distal extremity ; tarsi as in G. nigrofusca, though upper 

 side of first three joints of hind tarsi is sometimes scared}^ darker 

 than the hind tibia. 



Wimjs, sqnamcw, and hdUcres as in G. nigrofusca. 



Although, through the kindness of Professor E. 13. Poulton, 

 F.R.S., I have been enabled to re-examine the type of this species 

 (a 9 fi'om the Gold Coast, in the Oxford Museum*), since the 

 insect is somewhat faded, the above re-description has been 

 drawn up from a ^ and 9 taken at Oban, Southern Nigeria, 

 in August, 1910, by Mr. J. H. J. Farquhar, and presented to 

 the British Museum (Natural History) by the Entomological 

 Research Committee. 



Distribution of G. tahuniformis, Westw. 



All that can at present be said under this heading is that 

 the area of distribution of G. tabanlfonnis includes the Ivory 

 and Gold Coasts, Southern Nigeria, and the Congo Free State. 

 The following are the data with reference to the specimens 

 examined, in addition to those already mentioned : — French 

 Ivory Coast : 1 9 (tbe type of G. grossa, Bigot), Assinie (Ch. 

 AUnaud: presented by Mr. G. H. Verrall). Southern Nigeria: 

 1 9 . Ikom, Cross River, Eastern Province, 6. vi. 1910 [Dr. W. S. 

 Clark : the property of the Entomological Research Committee). 

 Congo Free State: 1 9, Leopoldville, 26. xii. 1903 {the late Dr . 

 J. E. Button, and Drs. J. L. Todd and ('. Christ;/). 



Bionomics. 



It would seem probable that the observations by Dr. C. 

 Christy, published by the present writer in the British Medical 

 Journal of September 17, 1904, as referring to G.fusca, actually 

 related to G. tahaniformis. If this be so, Dr. Christy's state- 

 ments show that in the Congo Free State G. tahaniformis may 

 be found round houses and on board river steamers, and that 

 it bites by night — at any rate, until about 11.0 p.m. 



* Cf. Austen, " A Monograph of the Tsetse-Flies," p. 98 (1903). 



