64 DESCEIPTION OF GLOSS IN A LONGIPALPIS. 



width of front at vertex, ^ 0-6 mm., $ 0*75 mm. ; length of 

 wing, (J 8 to 8-6 mm., ? 8-75 to 9-25 mm. 



Precisely similar to Glossina pallidipes, Austen (p. 58, Plate VI), 

 in general appearance, hid distinguished by the last two joints of 

 the front and middle tarsi having sharply defined and conspicuous 

 clove-broivn tips, and in the male sex by the front not being distinctly 

 narroiver at the vertex. 



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

 pollinose, posterior surface smoke-grey, ocellar triangle smoke- 

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

 brown blotch, as in G. pallidipes ; frontal stripe tawny ochraceous 

 or ochraceous anteriorly, mummy-brown posteriorly ; ocellar spot 

 and band joining bases of vertical bristles as in G. pallidipes ; 

 first and second joints of antennae buff, dark brown on inner 

 side, third joint mouse-grey, buff at exti'eme base, front margin 

 fringed as in G. pallidipes, arista coloured as in G. pallidipes, 

 but terminal joint without so prominent a ridge on upper side 

 at base and consequently not so tapering, branched hairs twenty- 

 one to twenty-three in number ; paJpri as in G. pallidipes ; 

 proboscis bulb dark sepia. 



Thorax. — Dorsum olive-grey or dark olive-grey, with markings 

 as in G. pallidipes ; pleurae, pectus and scutellum as in G. 

 pallidipes ; apical scutellar bristles long in both sexes. 



Abdomen. — Coloration and markings precisely the same as in 

 G. pallidipes, inner extremities of interrupted bands on third and 

 following segments often more or less obliterated. 



Legs. — Coloration, except in case of last two joints of front 

 and middle tarsi, the same as in G. pallidipes. 



Wings, squamae, and halteres as in G. pallidipes. 



Distribution of G. longipalpis, Wied. 



Although essentially a West African species, the range of 

 which extends to the north-west as far as Senegal," Glossina longi- 



shows that males of G. ixdlidiiies and longipalyis are readily distinguish- 

 able by means of their genital appendages [cf. Bulletin of Entomological 

 Eesearch, Vol. II, No. 1, pp. 30-32, Fig. 15, April, 1911). 



* For records of the occurrence of G. lungipalpis in Senegal, sec 

 Laveran, Comptes Rendus des Seances de l'Acad6mie des Sciences, 

 T. cxliv, p. 547 (1907). For records from French Guinea and French 

 Congo, sec Laveran, ibid., T. cxxxix, p. 659 (1904), and T. cxli, p. 931 

 (1905), respectively. 



