98 DESCEIPTION OF GLOSSINA MEDICOEUM. 



generally large-sized species, the members of which may, as a 

 rule, be distinguished from those belonging to the Glossina fusca 

 group by their much shorter proboscis and palpi ; the wings too 

 are generally paler in the former than in the latter group. The 

 most conspicuous differences exhibited by the present species as 

 compared with G. longipennis, which it closely resembles in size, 

 have already been given in the diagnosis which precedes the 

 description printed above. The characters by which O. medicorum 

 may be distinguished from G. brevipalpis are pointed out below 

 in the diagnosis and description of the former, whose area of 

 distribution, so far at any rate as at present known, is quite 

 different from that of G. hrevipalpis. 



Glossina medicorum, sp. nov. 



(Figs. 20, C, and 21, C, pages 86, 87, and Fig, 24, B.) 



$ , 9 • — Length, ^ (3 specimens) 9 to 10 mm., 9 (3 

 specimens) 10 to 10'6 mm. ; width of head, ^ 2'8 to 3 mm., 

 9 3*2 mm. ; width of front at vertex, -^ 0-5 to 0-75 mm., 

 9 just under 1 mm. ; length of portion of palpi projecting 

 beyond margin of buccal cavity, ^ 2 '5 to 2-75, 9 ^'^ to 

 3 mm. ; length of wing, ^ 9-75 to 10-25, 9 H "5 to 12 mm. 



Medium sized, or in the 9 ^c^ {which, so far as may be judged 

 from the three specimens of each sex available for examination, 

 considerably exceeds the $ in size), fairly large species, allied and 

 presenting a superficial resemblance to G. brevipalpis, Newst., but 

 distinguished in both sexes by the wings having the appearance of 

 being uniformly coloured {the upper portion of the anterior trans- 

 verse vein, the posterior transverse vein, and the portions of the 

 fourth longitudinal vein, that in G. brevipalpis are conspicuously 

 infuscated, are not or scarcely at all infuscated in the present 

 species), and in the ^ by tvell-marJced differences in the hypopygium 

 and hectors {cf b and A, Fig. 24, p. 99). 



Head buff", posterior surface greyish ; frontal stripe cinnamon 

 or light mummy-brown ; ocellar spot inconspicuous ; face and 

 lower half of posterior orbits shimmering whitish-yellow pollinose ; 

 bases of vertical bristles connected by a well marked dark brown 

 band ; antennae partly buff, partly brown or mouse-grey, outer 

 surface of second and base of third joint buff", inner surface of 



