1920,] the Birds of the Anglo-Egyptian Sudan. 845 



[B. col].] 1 Malakal May, 1 nr. Lake No May, 1 Klior 



Attar Fel). U.N. 

 [C. & L. coll.] 3 nr. Lake No Feb. & Mcb., 3 Tonga 



Feb., 2 Kbor Filus Feb., 2 moutb of Zeraf river Feb.^ 



1 month of Sobat river Feb., 1 lat. 9^° N. long. 



30° 40' E. Feb. U.N. 



Francolinus clappertoni heuglini < gedgei (intermediate). 



Francoliiius gedgii apiid Butler, Ibis, 1908, ]). 258. 



[B. coll.] 2 Mongalla ''summer/' Mon. ; 1 Ayum Jan., 

 1 Gadein Apl. E.G. 



The fine series of these Francolins before us show very 

 fairly flefiiiitely the limits of each race, and they sliow also 

 how very inucli more the Game-birds are likely to vary 

 within a given area than most other groups of birds. The 

 range of F. clapper I oni in its various forms is as follows : — 



1. F. c. CLAPPERTONI Children, op. cit. 



The palest form with a sandy-brown tone on the back, 

 gi'ound-coloui- of underside generally Avhite. 



Range. Lake Chad to Kordofan. 



On the White Nile from about El Ducm to Reuk a 

 form close to this race but tending towards the next 

 is found. We have referred to it as P. c. clappertoni 

 > heuglini. 



2. F. c. HEUGLiM Neum. op. cit. 



A much darker race with a dark grey not brown tone 

 on the back, ground-colour of underside yellowisb 

 white, dark markings wider and heavier. 



Range. From somewhere between Reidc and Fashoda 

 to the Sudd district of tlie eastern Bahr el Ghazal 

 and the Upper Nile Province. 



Further south in Mongalla and the southern Bahr el 

 Ghazal another form occurs, whicb is near P. c. 

 heuglini., but browner on the back and in reality inter- 

 mediate between this race, F. c. clappertoni, aiul F. c. 

 gedgei. It is [)ossibly nearest the latter. We have 

 referred to it as F. c. heuglini < gedgei. 



