G. FUSCA: BIONOMICS AND PUPAL STAGE. 73 



and in bush between Poinia and Allu, 9. xi. 1910 ( — Walton). 

 Southern Nigeria: 1 ^, Okigwi, 30. v. 1910 (J. J. Simjjson) ; 

 1 (J, Ikom, Cross River, Eastei'n Province, 6. vii. 1910 {Dr. 

 W. S. CJarh); 1 ^, Oban, 17. viii. 1910, and 1 ?, Cross 

 River, Eastern Province, 1910 (J. H. J. Farquhar). Uganda 

 Protectorate : 1 9 ? Bugoma Forest, 35 miles west of Hoima, 

 close to shore of Lake Albert, 1905, "caught biting native" 

 (Captain A. C. H. Gray, B.A.M.C.) ; 1 ? , north-east side of Lake 

 Edward, 1906 (received from Dr. A. D. P. Hodges, P.M.O.) ; 1 ? 

 (with its puparium), bred from pupa found near south-east corner 

 of Lake Albert, 5. xii. 1906 {Dr. A. G. Bayshawe). 



Bionomics. 



Dr. A. Eanghorn, who has observed G. fusca in Ashanti, 

 states that as regards its habitat this species resembles G. longi- 

 palpis much more closely than G. palpalis. " It was usually 

 found just at the fringe of patches of bush, and it was rare to 

 catch more than one specimen or at most a couple. It feeds not 

 uncommonly at night, and may be met with in dull or rainy 

 weather." Specimens of G. fusca once or twice settled on 

 Dr. Kinghorn " on a pitch-black, rainy night."* 



Preliminary Stages. 



All that can at present be said as to the life-history of G. fusca, 

 Walk., relates to the pupal stage. On December 5th, 1906, 

 Dr. A. G. Bagshawe (now Director of the Sleeping Sickness 

 Bureau) found in a dry gully in the vicinity of the Mizizi River, 

 near the south-east corner of Lake Albert, Uganda Protectorate, 

 .a number of empty puparia belonging to the present species, 

 together with one pupa from which the fly referred to above 

 subsequently emerged. These specimens, which were afterwards 

 presented to the National Collection by Dr. A. D. P. Hodges, 

 P.M.O., Uganda Protectorate, show that the pupa of G. fusca 

 measures some 8 mm. in length, by about 4*5 mm. in greatest 

 breadth, and conse({uently agrees in its dimensions with the pupa 

 of G. hrev'qmlpis, Newst.j The pupae of these two species can, 

 however, at once be distinguished by the shape of the notch 

 between the tumid lips or anal protuberances {cp. Figs. 6 b and 6 a). 



* Sleeping Sickness Bureau Bulletin, Vol. 3, No. 25, p. 136 (March 14, 

 1911). 



t Sec p. 96. 



