62 PUPA OF GLOSSINA PALLIDIPES. 



know of the fly, but do not consider it dangerous to animals. 

 They keep sheep and goats, and drive them along this path. No 

 cattle are kept for many miles round." 



In the East Africa Protectorate, where, according to 

 Dr. P. H. Ross, the species is most numerous in August and 

 September, Dr. A. D. Milne, P.M.O., states that G. palUdipes, 

 in company with G. hrevipalpis and longipennis, attracted by 

 lamplight frequently enters railway carriages when a train is 

 waiting during the night at one of the stations in the fly-belt on 

 the Uganda Railway, and thus may be carried for a distance of 

 150 miles or more.* 



Preliminary Stages. 



A comparison of the pupae obtained by Colonel Sir David 

 Bruce in Zululand, and described and figured by the author in 

 his " Monograph of the Tsetse-Flies," pp. 26-28, Fig. 7 (1903), with 

 the pupa-case of Glossina morsitans, Westw., recently discovered 

 by Mr. R. W. Jack at Lomagundi, Southern Rhodesia (see p. 57, 

 and compare Figs. 6 d and 6 c, p. 7), conclusively shows that there 

 can be no doubt that the former belong to G. pallidipes, Austen. 

 The pupa of G. pnllidipes then (Figs. 4, 5 d, 6 d), as represented 

 by Sir David Bruce's examples (four specimens), is from 6"4 to 

 7 mm. in length, by 3-4 to 3-75 mm. in greatest width. The 

 tumid lips, which are from 0-8 to 1 mm. long, and separated by a 

 U-shaped notch (somewhat resembling but with straighter sides 

 and fuller at the bottom than the notch in the case of the pupa 

 of G. fusca, Walk.), are much larger than the lips of the pupa of 

 G. morsitans, while the notch between them is about twice as 

 wide as in the latter. The notch is quite different in shape from 

 that exhibited by the pupa of G. hrevipalpis, Newst. (compare 

 Figs. 6 D and 6 a), and the inner edges of the distal portions of 

 the lips are more rounded and less sharp than in the case of the 

 pupa of either G. hrevipalpis or G. fusca. 



Affinities and Distinctive Characters. 



Among the species of the Glossina morsitans group to which 

 it belongs, G. pallidijies is distinguished from G. morsitans, 

 Westw., inter alia by the presence of a distinct fringe of fine 

 hair on the front margin of the third joint of the antennae, 

 by the narrowness of the pale hind margins to the banded 



* Cf. Sleeping Sickness Bureau Bulletin, Vol. II, No. 13, p. 37 

 (January 10, 1910). 



