ANATID^. CXXXVI. 231 



by the wings. L. 22. W. 11. T. 4. N. Am., not rare. (Eu.) 

 (Lat., obstreperous.) 



dd. Lamellae coarser, less than 15 visible externally ; bill shorter than head. 

 ( Mareca Stephens.) 



694. A. penelope (L.). EUROPEAN WIDGEON. Head and 

 neck cinnamon ; in $ top of head brownish white ; sides of head 

 with slight traces of green. Europe ; rare in America. (Eu.) 



695. A. americana (Gmelin). AMERICAN WIDGEON. BALD- 

 PATE. Head and neck grayish in <, speckled with dusky; top of 

 head white ; sides of head with bright green patch ; speculum 

 glossy-green, preceded by black, white, and gray on wing-coverts ; 

 9 duller. L. 20. W. 11. T. 4. N. Am., abundant. (Eu.) 



352. SPATULA Boie. (Lat M spoon.) 



G96. S. clypeata (L.). SHOVELLER. SPOON-BILL DUCK. $ 

 bead and neck green ; breast white ; belly chestnut ; wing coverts 

 blue ; speculum green, bordered by black and white ; rump and tail 

 coverts black ; 9 streaky brownish, known by the bill and wings. 

 L. 20. W. 9. B. 2|. N. Am., common. (Eu.) (Lat., clypeum, 

 shield.) 



353. D AFILA Stephens. (A coined word.) 



697. D. acuta (L.). PIN-TAIL. SPRIG-TAIL. $ head dark 

 brown with purplish gloss ; side of neck with a long white stripe ; 

 back gray, finely waved with darker ; lower parts white ; crissum 

 black ; sides finely waved ; speculum violet, with black, white, and 

 buffy ; tail cuneate when developed, central feathers black and 

 much projecting ; 9 speckled and streaked ; tail much shorter ; 

 bill dusky; feet grayish blue. L. 20 to 30. W. 11. T. 9 or less. 

 N. Am. common, a slender, trim-built duck. (Eu.) 



354. AIX Boie. (ai, a water-bird ; diWa>, to spring.) 



698. A. sponsa (L.). WOOD DUCK. SUMMER DUCK. Crested; 

 g head iridescent green and purple, with white stripes and a 



forked white throat patch ; back varied, black, green, etc. ; breast 

 rich chestnut ; sides buffy, very finely waved with dark ; speculum 

 green ; tips of primaries frosted ; 9 duller, head mostly gray ; 

 varied with white. L. 20. W. 9. T. 5. U. S. frequent ; nesting 

 in trees, the most elegant of all ducks. (Lat., bride.) 



355. AYTHYA Boie. (aWvta, a sea-bird.) 



a. Bill not wider toward its end than at base ; cf with head and neck reddish. 

 6. Bill much shorter than middle toe without claw, the nail hooked. 

 (Aythya.) 



699. A. americana (Eyton). RED HEAD. POCHARD. $ 



head and neck chestnut with red reflections ; back mixed silvery 



