BIRDS OF EUROPE, 
NOT OBSERVED IN THE BRITISH ISLES. 
Okder I.— RAPACES. 
Division I. — Rapaces — Diurnte. 
Family I.— VULTURID^. 
Genus I. — Vultur. (Illiger.) 
Generic Characters. — Beak large, strong, and curved only at the end; nos- 
trils opening crosswise; eyes even with the head; head and neck without, 
or only partially covered with feathers mixed with down. Vertebrae fifteen. 
Sub-genus Otogyps. (Gray.) 
NORTHERN SOCIABLE VULTURE. 
Otogyps nubicus. 
Vultur nubicus, 
" auricularis, p., 
" imperiaks et cegypius, 
Smith. 
J. R. Gray. 
Temminck. 
Specific Characters. — Neck covered with feathers close up to the throat. 
Throat and upper parts of the neck naked, and of a bluish pink colour. 
Nuchal flap sometimes more or less undeveloped. Feathers forming the 
ruff long and narrow; under parts dark brown, no white underneath. Length 
four feet and upwards. 
In the first edition of this work I figured the Vultur auricularis of 
Daudin and modern authors, and its egg. I expressed then, however, 
a doubt about the propriety of admitting it into the European fauna, 
and this doubt has been more than confirmed by the experience of the 
last ten years. The Oricou of Le Vaillant is not a European bird. 
VOL. I. b 
