ORDER ANSERES. 65 
[B 575, C 486, R 600, C 705.] 
Geroc. Dist.— Southern border of the United States (Louisiana, 
Texas, Nevada, California), south to Mexico, reappearing in 
southern Brazil and Argentine Republic. Casual in North Carolina 
and Missouri. 
SUBFAMILY CYGNINZA. Swans. 
Genus OLOR Wacter. 
Olor WAGLER, Isis, 1832, 1234. Type, Anas cygnus LINN. 
[179.] Olor cygnus (Linn.). 
Whooping Swan. 
Anas cygnus LINN. S.N. ed. 10, I. 1758, 122. 
Olor cygnus BONAPARTE, Catal. Parzudaki, 1856, rs. 
[B—, C—, R 586, C 690. | 
Geoc. Dist.— Europe and Asia ; occasional in southern Greenland. 
180. Olor columbianus (Orp). 
Whistling Swan. 
Anas columbianus Orvd, in GUTHRIE’S Geogr. 2d Am. ed. 1815, 
319- 
Olor columbianus Steyn. Pr. U.S. Nat. Mus. V. 1882, 210. 
[B 561 dis, C 477, R 588, C 689. ] 
Groc. Dist.— The whole of North America, breeding far north. 
Commander Islands, Kamchatka; accidental in Scotland. 
181. Olor buccinator (Ricu.). 
Trumpeter Swan. 
Cygnus buccinator Ricu. in Sw. & Ricu. Fauna Bor. Am. II. 
1831, 464. 
Olor buccinator WaGLER, Isis, 1832, 1234. 
[B 562, C 476, R 589, C 688.] 
Groc. Dist.— Chiefly the interior of North America, from the 
Gulf coast to the Fur Countries, breeding from Iowa and the Dakotas 
northward ; west to the Pacific coast; rare or casual on the Atlantic. 
5 
