ORDER ANSERES. 1 29 



177. Dendrocygna autumnalis (Linn.). 



Black- bellied Tree-duck. 



Anas autumnalis Linn. S. N. ed. 10, L 1758, 127. 

 Dendrocygna autumnalis Eyton, Monogr. Anat. 1838, 109. 



[B 574, C 487, R 599> C 7c6.] 



Hab. Southwestern border of the United States and southward 

 (Mexico, West Indies, etc.). 



178. Dendrocygna fulva (Gmel.). 



Fulvous Tree-duck. 



Anas fulva Gmel. S. N. L 1788, 530. 



Dendrocygna fulva Burmeister, Reise durch die La Plata Staaten, 

 1856, 515. 



[B 575, C 486, R 600, C 705.] 



Hab. Southern border of the United States (Louisiana, Texas, 

 Nevada, California) and southward. 



Subfamily CYGNINjE. Swans. 



Genus OLOR Wagler. 

 Olor Wagler, I sis, 1832, 1234. Type, Anas cygnus Linn. 



[179.] Olor cyguus (Linn.). 

 Whooping Swan. 



Anas cygnus LiNN. S. N. ed. 10, L 1758, 122. 



O/^r ^j^;/«j Bonaparte, Catal. Parzudaki, 1856, 15. 



[B —, C — , R 586, C 690.] 



Hab. Europe and Asia ; Greenland. 



180. Olor columbianus (Ord). 



Whistling Swan. 



Anas columbianus Ord, in Guthrie's Geogr. 2d Am. ed. 18 15, 319. 

 Olor columbianus Stejn, Pr. U. S. Nat. Mus. V. 1882, 210. 



[B 561 bis, C 477, R 588, C 689.] 



Hab. The whole of North America, breeding far north. 



