DISTRIBUTION OF GLOSSINA LONGIPALPIS. 65 



palfis is found at least as far to the south-east as the Katanga 

 district of the Congo Free State,* i.e. the south-eastern corner of 

 Belgian Congo. As stated in tlie author's " Monogi-aph,"t the 

 Museum collection contains a male of this species, which, if its label 

 may be trusted, was collected by Dr. John Kirk (now Sir John 

 Kirk, G.C.M.G., K.C.B., F.R.S.) on the Zambesi. Specimens of 

 Glossina palpalis, Rob-Desv., and G. hrevipalpis, Newst., in the 

 possession of the Museum, also bear similar labels, and according 

 to a recently published extract from a letter from Sir John Kirk | 

 all the Tsetse-flies brought home by him, which were collected so long 

 ago as 1864, were obtained in the valley of the Zambesi, between 

 Tete and the Victoria Falls. Even assuming that no mistake 

 has been made in the labelling of this specimen, it by no means 

 follows that G. longipalpis is still to be found on the Zambesi, 

 since we know, for instance, that Glossina morsitans, Westw., 

 has disappeared from the Victoria Falls, where at one time it 

 abounded. Apart from statements relating to Sir John Kirk's 

 solitary specimen, there are no records or other evidence, recent 

 or otherwise, of the occurrence of G. longipalpis south of the 

 Congo Free State ; therefore, until indisputable proof to the 

 contrary is received, it will be safer to regard Katanga as 

 forming the southern limit of the range of G. longipalpis, so far 

 as is at present known. The authenticated area of distribution 

 of Glossina longipalpis, which, as already stated, is a West 

 African species, extends then from Senegal to the Katanga 

 district of the Congo Free State. 



The particulars with reference to the specimens of G. longi- 

 palpis (other than Sir John Kirk's example) now in the British 

 Museum (Natural History) are as follows : — Gold Coast : -Si, 

 499, Dodowah (30 miles from Accra), " very numerous after 

 the break of the rains," May, 1906 {G. A. Laing) ; 1 S, Volta 

 River, March, 1908 ((?. C. Dudgeon). Northern Nigeria: 1 S, 

 3 9 ? 5 Akwatcha, Bassa Province, July and August, 1906 

 (Dr. 6?. J. Firie, W.A.M.S.) ; R. Niger, Ilorin Province, near 

 Jebba, October, 1909 {Br. C. W. 3IcLeay, W.A.M.S.) ; I ^ , Baro, 

 R. Niger, Nupe Province, 1909 {Br. E. A. Chartres, W.A.3I.S.). 

 Southern Nigeria : 5 (J (^ , 2 9 9 > Igbassa, Ijami, between Ijami 



* G. longipalpis is recorded from the Upper Luapula River by Newstead 

 and Todd (Annals of Tropical Medicine and Parasitology, Series T. Rf., 

 Vol. I, No. 1, p. 72 (February 1, 1907) ) ; also from Lukafu, July, 1903, by 

 Laverau, Comptes Rendus des Seances de I'Acad^mie des Sciences, 

 T. cxxxix, p. 662 (1904), and T. cxli, p. 932 (1905). 



t E. E. Austen, " A Monograph of the Tsetse-Flies," p. 92 (1903). 



X Cf. Sleeping Sickness Bureau Bulletin, No. 3, p. 125 (January. 1909). 



F 2 



