230 AVES: ANSEKES. XXXV. 



351. ANAS Linnseus. (Lat., duck.) 



a. Culmen longer than middle toe without claw. 



b. Speculum violet, bordered with black ; bill greenish-yellow ; L. more 

 than 20. 



688. A. boschas L. MALLARD DUCK. TAME DUCK, g head 

 and upper neck rich glossy green, a white ring below; breast 

 purplish chestnut ; speculum violet, with black and white before 

 and behind it; 9 duller, chiefly dull ochraceous, streaked with 

 dark brown. L. 24. W. 12. N. Am., abundant; commonest 

 westward. Original of the common domestic duck ; various hy- 

 brids of this species with others are described. (Eu.) (/Soovcay, 

 mallard.) 



689. A. obscura Gmelin. BLACK DUCK. Size of mallard and 

 resembling the 9 > but darker ; both sexes entirely dusky, varied 

 with brown ; no decided white except under the wings. E. U. S., 

 common W. to Iowa. 



351 b. QUERQUEDULA Stephens. 



c. Wing-coverts in both sexes sky-blue, the greater white tipped; scapu- 

 lars in 6 striped with blue and buff; bill rather broad; head not 

 crested; speculum green. 



690. Q. discors (L.). BLUE-WINGED TEAL. < head and neck 

 blackish plumbeous, darkest on the crown ; a white crescent in 

 front of eye ; under parts thickly spotted ; 9 dull streaky brown- 

 ish and buffy, known by the wings. L. 16. W. 7. T. 3. E. U. S., 

 W. to Rocky Mts., abundant. (Lat., discordant.) 



691. Q. cyanoptera (Vieillot). CINNAMON TEAL. chiefly 

 chestnut; top of head blackish; 9 dull and streaky. L. 17. W. 7^. 

 S. W., straying E. to 111. (icvavos, blue ; irrepov, wing.) 



351 c. NETTTON Kaup. 

 cc. Wing coverts leaden gray, without blue; bill very narrow. 



692. N. carolinense (Gmelin). GREEN-WINGED TEAL. Head 

 and upper neck rich chestnut in $ ; a green patch behind eye ; 

 upper parts with wavings of black and white ; white below ; buffy 

 on breast, with dark spots ; 9 different, known by the small size 

 and color of wing ; white crescent on sides in front of wings. 

 L. 15. W. 1\. T. 3. N. Am., common ; one of the best of the 

 ducks as food. 



351 d. CHAULELASMUS Bonaparte. 



aa. Culmen shorter than middle toe without claw. 

 d. Lamellae numerous, fine, more than 30 visible from outside. 



693. C. streperus (L.). GADWALL. GRAY DUCK. < barred, 

 black and white, middle wing coverts chestnut, greater coverts 

 black, speculum white ; 9 dusky and tawny with little chestnut, 



