Il8 CHECK-LIST OF NORTH AMERICAN BIRDS. 



144. Aiz sponsa (Linn.). 



Wood Duck. 



Anas sponsa Linn. S. N. ed. lo, I. 1758, 128. 

 Aix sponsa Bonap. Comp. List, 1838, 57. 



[B 587, C 499, R 613, C 719.] 



Hab. Temperate North America, breeding throughout its range. 



Genus NETTA Kaup. 



Netta Kaup, Sk. Ent. Europ. Thierw. 1829, 102. Type, Anas rufina 

 Pall. 



[145.] Netta nifina (Pall.). 

 Rufous-crested Duck. 



Anas rufina Pall. It. II. App. 1773, 73 !• 



Netta rufina Ridgw. Pr. U. S. Nai. Mus. VIII. 1885, 355. 



[B _, C — , R — , C 886.] 



Hab. Eastern Hemisphere ; accidental in Eastern United States. 



Genus AYTHYA Boie. 



Aythya Boie, Isis, 1822, 564. Type, by elimination, Anas ferina 

 Linn. 



146. Aythya americana (Eyt.). 



Redhead. 



Fuligula americana Eyton, Monogr. Anat. 1838, 155. 

 Aythya americana Baird, B. N. Am. 1858, 793. 



[B 591, C 503, R 618, C 723.] 



Hab. North America, breeding from California and Maine north- 

 ward. 



147. Aythya vallisneria (Wils.). 



Canvas-back. 



Anas vallisneria Wilson, Am. Cm. VIII. 1814, 103. 

 Aythya valisneria Boie, Isis, 1826, 980. 



