58 DESCRIPTION OF GLOSSINA PALLIDIPES. 



margin of the third joint of the antennae, and the greater depth 

 of the pale hind margins to the banded abdominal segments. 

 Further distinctive characters from G. jjollidipes are pointed out 

 on page 63. 



Glossina pallidipes, Austen. 



(Plate VI.) 



Glossina pallidipes, Austen, "A Monograph of the Tsetse-Flies." p. 87, 

 Plate IV (1903). 



$ , 9 . — Length, (^ (11 specimens) 8-5 to 10-4 mm., 9 (9 speci- 

 mens) 9-75 to 11-25 mm.; width of head, ^ just under 3 to 

 3-2 mm., 9 3 to 3*25 mm. ; width of front at vertex, ^ 0-5 to 

 0-6 mm., 9 0-8 to 1 mm. ; length of wing, ^ 8-6 to 9-4 mm., 

 9 9-5 to lU-25 mm. 



Medium-sized or rather large species, closely resemhling the 

 West African G. longipalpis, Wied. (p. 63, Plate VII), hut distin- 

 guishable owing to the coloration of the last two joints of the front 

 and middle tarsi. — Front in $ very narroio ; dorsum of thorax 

 olive-grey, smoke-grey, or drah-grey, with the usual dark hrown, 

 longitudinal markings generally much reduced, hroken up, and hut 

 little conspicuous ; ahdomen huff, dorsum with dark hroicn or clove- 

 hrcwn bands as shown in Plate VI ; legs huff] last tioo joints of hind 

 tarsi clove-brown, front and middle tarsi either entirely pale or, at 

 most, last two joints of front tarsi faintly brownish at the tips, and 

 last joint and distal half of penultimate joint of middle torsi light 

 hrown — never so dark as to form a sharp contrast with the remaining 

 joints. 



Head cream-buff, face and jowls bright cream-coloured pol- 

 linose, posterior surface light grey, ocellar triangle smoke-grey or 

 drab-grey, sides of front (parafrontals) each with a dark brown 

 elongate blotch, sometimes indistinct, a little below half way 

 between level of ocellar spot and that of base of antennae ; 

 frontal stripe raw-sienna-coloured, upper fourth mummy-brown or 

 brownish ; ocellar spot slate-coloured, connected with clove-brown 

 transverse band joining bases of vertical bristles ; first and 

 second joints of antennae (cf. Fig. 8, p. 12) dark brown, third 

 joint light or dark mouse-grey, more or less buff at base, elongate 

 and with a prominent distal extremity, front margin with a 

 conspicuous fringe of fine hair of moderate length, ai'ista cream- 

 buff or buff, base of penultimate and lower margin of proximal 



