ORDER ANSERES. 



125 



[B 609, C 519, R 634, C 741.] 



Hab. North America in general, south to Cuba, GuatPmala, and 

 Northern South America, breeding throughout most of its North Amer- 

 ican range. 



Genus NOMONYX Ridgway. 



Nomojiyx Ridgw. Pr. U. S. Nat. Mus. II. 1880, 15. Type, Anas 

 dominie a LiNN. 



[168.] Nomon3r2 dominicus (Linn.). 



Masked Duck. 



Anas dojninica Linn. S. N. ed. 12, 1766, 201. 



Nomonyx dominicus RiDGW. Pr. U. S. Nat. Mus. II. 1880, 15. 



[B610, C520, R635, C 742.] 



Hab. Tropical America ; accidental in Eastern North America 

 (Wisconsin ; Lake Champlain). 



Subfamily ANSERIN-<aEi. Geese. 



Genus CHEN Bote. 

 Chen BoiE, Isis, 1822, 563. Type, Anser hyperboreus Pall. 



169. Chen hyperborea (Pall.). 

 Lesser Snow Goose. 



Anser hyperboreus Pall. Spicil. Zool. VI. 1769, 25. 

 Chen hyperborea Boie, Isis, 1822, 563. 



[B — , C 480^, R 591 a, C 696.] 



Hab. Pacific coast to the Mississippi Valley, breeding in Alaska; 

 south in winter to Southern Illinois and Southern California. 



169 dr. Chen hyperborea nivalis (Forst.). 



Greater Snow Goose. 



Anas nivalis Forster, Philos. Trans. LXII. 1772, 413. 



Chen hyperboreus nivalis Ridgw. Pr. Biol. See. Wash. II. 1884, 107. 



[BS63, C480, R591, €695.] 



