52 CHECK-LIST OF NORTH AMERICAN BIRDS. 
Genus AIX Bok. 
Aix Bots, Isis, 1828, 329. Type, Anas sponsa LINN. 
144. Aix sponsa (Linn.). 
Wood Duck. 
Anas sponsa LINN. S. N. ed. to, I. 1758, 128. 
Aix sponsa Bonar. Comp. List, 1838, 57. 
[B 587, C 499, R 613, C 719.] 
Geroc. Dist.— Temperate North America, breeding throughout its 
range. Cuba. Accidental in Europe. 
SUBFAMILY FULIGULINZS. Sea Ducks. 
Genus NETTA Kavp. 
Nvetta Kaur, Sk. Ent. Europ. Thierw. 1829, 102. Type, Anas 
rujina PALL. 
[145.] Netta rufina (PALL.). 
Rufous-crested Duck. 
Anas rujina Patt. It. Il. App. 1773, 713. 
Lvetta rujina Kaur, Sk. Ent. Europ. Thierw. 1829, 102. 
[B—, C—, R—, C 886.] 
Groc. Dist.— Eastern hemisphere; accidental in eastern United 
States. 
Genus AYTHYA Bole. 
Aythya Botk, Isis, 1822, 564. Type, by elimination, Anas ferina 
LInn. 
146. Aythya americana (EvrT.). 
Redhead. 
fuligula americana Eyton, Monogr. Anat. 1838, 155. 
Aythya americana BairD, B. N. Am, 1858, 793. 
