159 



PALMIPEDES. 



Fa7nily ANATID^dE. (Bonaparte.) 



Genus FuLiGULA, f Stephens. J 



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

 more or less elevated at the base and depressed towards the 

 point. IN'ostrils 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. 



A7ias mersa, Pallas; Voy., 1776. Schlegel. 



" leucocepJiala, Scopoli, according to Gmelin. 

 Syst., 1788. 



" " Latham. Temminck. 



Erismatura leucocejohala , Bonapaete; 1838. 



Undina mersa, Keyseeling et Blasius; 1840. 



" leucocepJiala, Gould. 

 Fuligule couronne, 



Canard couronne, or 



Canard Nymfhe, Of the Peench. 



Europdische Nymphenente, Op the Gekmans. 



Gohho ruffinosa, Savi. 



