ORDER ANSERES. 61 
169.1. Chen czerulescens (Linv.). 
Blue Goose. 
Anas cerulescens LINN. S. N. ed. to, I. 1758, 124. 
Chen cerulescens GUNDL. in PorEy’s Repert. Fis.-nat. Isla Cuba, 
I, 1865-66, 387. 
[B 564, C 479, R590, C 694.] 
Geoc. Dist.— Interior of North America, breeding on eastern 
shores of Hudson Bay and migrating south, in winter, through 
Mississippi Valley to Gulf coast ; occasional on Atlantic coast. 
170. Chen rossii (Cassin). 
Ross’s Snow -Goose. 
Anser rossit ‘BAIRD MSS.,” Cass. Pr. Ac. Nat. Sci. Phila. 1861, 
73: 
Chen rossi Ripaw. Pr. U. S. Nat. Mus. III. Aug. 24, 1880, 203. 
[B—, C 481, R 592, C 697.] 
Geroc. Dist.— Arctic America in summer, Pacific coast to southern 
California and east to Montana in winter. 
Genus ANSER Brisson. 
Anser BRISSON, Orn. Vi. 1760, 261. Type, Anas anser LINN. 
[171.] Anser albifrons (GMEL.). 
White-fronted Goose. 
Anas albifrons GMEL. S. N. I. 1788, 509. 
Anser albifrons Becust. Gem. Naturg. Deutschl. IV. 1809, 898. 
[B—, C—, R 593, C 692.] 
Geoc. Dist.— Northern parts of eastern hemisphere. Eastern 
Greenland? 
171 a. Anser albifrons gambeli (Har tt.). 
American White-fronted Goose. 
Anser gambeli HARTLAUB, Rev. Mag. Zool. 1852, 7. 
Anser albifrons var. gambeli COUES, Key, 1872, 282. 
