159 



PALMIPEDES. 



Family ANATID^. f Bonaparte.] 



Genus FuLiGULA. (Stephens.) 



Generic Characters. — Beak of a form and length very variable, 

 more or less elevated at the base and depressed towards the 

 point. Xostrils a short distance from the base. Legs more 

 behind the centre of gravity than in the genus Anas, and 

 the tarsi more compressed; toes long, the two outer ones being 

 larger than the tarsus; hind toe with distinct depending 

 membrane. Wings rather short; tail more or less stiff. Trachea 

 dilated and ossified at its bifurcation. 



WHITE-HEADED DUCK. 



Fuligula mersa. 



Fuligula mersa, Degland; Ornith. Europ., 1849, 



Anas mersa, Pallas ; Voy., 1776, Schlegel. 



" leucocephala, Scopoli, according to Gmelin. 



Syst., 1788. 



" " Latham. Temminck. 



Erismatura leucocephala, Bonapaete; 1838. 



Undina mersa, Keyseeling et Blasius; 1840. 



" leucocephala, GoULD. 

 Fuligule couronne. 



Canard couronne, or 



Canard Nymfhe, Of the Feench. 



Europdische Nymphenenle, Or the Geemans. 



Gohho ruffinosa, Savi. 



