HOOPER. 



NATATORES. 



97 



ANATID^. 





THE HOOPER, 

 Elk, or Whistling Swan. 



Anas cygnus. Wild Swan, 



>i >> jerus, ,, ,, 



Cygnus ferus, 



Anas cygnus, 

 Cygnus musicus 



Pknn. Brit. Zool. vol. ii. p. 218. 

 Mont. Ornith. Diet. 

 Bewick, Brit. Birds, vol. ii. p. 281. 

 Flem. Brit. An. p. 126. 

 Selby, Brit. Ornith. vol. ii. p. 278. 

 ,, ,, Jenyns, Brit. Vert. p. 227. 



,, ,, Gould, Birds of Europe, pt. xv. 



Cygne sauvage, Temm. Man. d'Ornith. t. ii. p. 828. 



„ pt. iv. p. 526. 



Whistling ,, 



Cygnus, Generic Characters. — Beak of equal breadth throughout its 

 length ; higher than wide at the base ; depressed at the point ; both mandibles 

 furnished along the sides with transverse serrated lamellas. Nostrils oblong, 

 lateral, near the middle of the beak. Neck slender and very long. Legs 

 short, the hind toe small and free. 



VOL. III. H 



