ANATIDJE. — LX. , 143 



13. AYTHYA, Boie. Canvas-Back Ducks. 



1. A. ferina (L.) var. americana, (Eyton) Allen. Red 

 Head. Pochard. <$' head and neck chestnut with red 

 reflections; back mixed silvery and black; the dark 

 waved lines unbroken; $ duller; bill shorter than head, 

 two or less, bluish, the nail dark; L. 20; W. 10. N. Am., 

 abundant. 



2. -4. /a///s/7er/flf, (Wilson) Boie. Canvas -Back Duck. 

 Head more dusky; black wavy lines on back broken, the 

 whitish predominating; bill as long as head, 2^ or more, 

 dusky. N. Am.; especially coastwise in winter. 



14. CLANGULA, Fleming. Golden-Eyes. 



1. C, clangula, (L.) Golden - Eye. Garrot. 

 ^ head puify, glossy green with some white; upper parts 

 black; white continuous on outer surface of wing; $ 

 head duller, snuff- colored and scarcely puffy; L. 16 to 

 19; W. 8 to 9. N. Am. and Europe. 



2. C. islandica, (Gni.) Bp. Barrow's Golden-Eye. 

 Similar; gloss of head purplish; white of wing divided 

 by dark bar; more white on head; larger. N. U. S. and 

 N.; rare. 



3. C. albeola, (L.) Steph. Dipper. Buffle Head. 

 Butter-Ball. Spirit Duck. $, with head very puffy 

 and iridescent; a large white ear patch; L. 10; W. 7; $ 

 small, dark gray ; head scarcely puffy. N. Am., 

 abundant. 



15. MAR ELD A, Leach. Long -Tailed Ducks. 



■r 



1. //. hyemalis, (L.) South - Southerly. Old 

 Wife. Long -Tailed Duck. Reddish brown, nearly 

 white in winter; tail very long; $ quite different, no 



