66 BIONOMICS OF GLOSSINA LONGIPALPLS. 



and Meko, and between Meko and Igbassa (all localities in 

 Western Province), April, 1908 {G. C. Dudgeon); I ^, 1 9, 

 Sebe, 1 (J , between Olebakinand Ifon, May, 1908 {G. C. Dudgeon). 

 It will have been noticed that the Museum has as yet 

 received no specimens of G. longipal^ns from Sierra Leone, where 

 the type of the species (and therefore also of the genus Glossina) 

 was obtained by the Swedish botanist Afzelius in the closing 

 years of the eighteenth century. 



Bionomics. 



Like other members of the Glossina morsitans group, 

 to which it belongs, G. longipalpis would appear not to be so 

 closely restricted to the immediate vicinity of water as the 

 species belonging to the Glossina palpalis group often, although 

 not invariably, are. A field-note attached by Mr. G. C. Dudgeon 

 to a (^ and 9 taken by him near Ijami, Southern Nigeria, in 

 April, 1908, as mentioned above, states that they were caught in 

 bush, where there was no water and also no game, with the 

 exception of small antelope ; at Sebe, Southern Nigeria, where 

 Mr. Dudgeon found G. longipalpis in May, 1908, game was repre- 

 sented by the West African buffalo (Buhalus nanus). Writing 

 to the author on April 8th, 1907, with reference to G. longipalpis 

 as found by him in Northern Nigeria, Dr. G. J. Pirie said : 

 " During the dry season at Akwatcha (twenty-five miles inland 

 from the River Benue), Bassa Province, Glossina longipalpis are 

 very few, while during the rains they are rather numerous, 

 especially in the desner bush-patches along the small water- 

 courses." Dr. Pirie added that " trypanosomiasis both of animals 

 (horses and dogs) and of man exists at Akwatcha, especially 

 in the rainy season from May to October," and that he had 

 searched carefully for Glossina palpalis, but, so far as he could 

 judge, without success. 



At a certain spot on the Oueme River, in Dahomey, where 

 both G. longipalpis and palpalis occur, the latter species, accord- 

 ing to Roubaud, is for the most part confined to the immediate 

 vicinity of the water and to the belt of forest fringing the banks ; 

 G. longipalpis, on the other hand, which is scarcely to be found 

 in the actual palpalis zone, predominates in the bush bounding 

 the forest on the outer side, and is there preyed upon by a 

 Hymenopteron belonging to a new species of the genus Bemhex.'"' 



* Cf. E. Roubaud, Comptes Eendus des Stances de TAcademie des 

 Sciences, T. 151, No. 8, p. 506 (August 22, 1910). 



