Russia north of the Caucasus. 



285 



merits, being common during the winter in toAvns. More to 

 the west I found the same race of the Peregrine Falcon 

 breeding in Poland, in the eastern parts of North Germany, 

 in the plains of the Danube, and in Lombardy. But in the 

 plains of Scandinavia, in Southern Germany, Lombardy, 

 France, the British Islands, Spain, and the other parts of 

 Middle and Western Europe specimens intermediate between 

 F.p. cornicuni and F.p. brevirostris are more common, which 

 are unknown in Russia. East of European Russia this race 

 breeds in some parts of Western Asia. During the winter it 

 is found as far east as China and as far south as Ceylon, 

 India, Arabia, and the Crimea (specimens preserved in the 

 British Museum and in the collection of Mr. H. Seebohm). 

 Concisely, the differences between the three above-men- 

 tioned races of the Pereo-fine Falcon are as follows : — 



F. p. griseiventris. 



Above delicate bluish 

 grey; clieeks and mous- 

 taches blackish grey ; 

 chin and throat spotless 

 white, with a tinge of 

 pale yellow on the 

 throat ; tlie rest of the 

 under surface of the 

 body with a deeply de- 

 veloped tinge of grey, 

 and only with traces of 

 spots on the naiddle por- 

 tions of the under breast, 

 abdomen, and thighs, re- 

 placed by narrow bars 

 on the flanks, axillaries, 

 and under winff-coverts. 



F. p. cornicum. 

 Above very dark ; 

 cheeks and moustaches 

 slate-black ; under sur- 

 face of the body, with 

 the exception of the 

 chin, very rufous, with 

 a prevalent grey tint on 

 the flanks, abdomen, and 

 tliiglis ; chin spotless, 

 the rest of the under 

 surface very spotted and 

 barred ; under wing- co- 

 verts blackish grey spot- 

 ted with ferruginous 

 buff. 



F. p. brevirostris. 

 Above bluish grey ; 

 clieelis and moustaches 

 blackish gre}^, the for- 

 mer clearer than the 

 latter ; under surface of 

 the body white, tinged 

 with rosy yellow on the 

 throat and breast, and 

 with very delicate grey 

 on the abdomen, flanks, 

 and thighs ; with the 

 advance of age the spots 

 and bars on the vmder 

 surface of the body 

 nearly disappear ; under 

 wing-coverts blackish 

 grey spotted with whi- 

 tish. 



Falco leucogenys. 



In its colouring, dimensions, and geographical range Falco 

 leucogenys is intermediate between Falco peregrinus and its 

 more southern representatives, Falco barbarus, F.feldeggii, 

 F. tanypterus , &c. 



