ANATID^. — LX. 141 



^f the common Domestic Duck; various hybrids of this 

 species with others are described. 



2. ^. obscura, Gm. Black Duck. Size of mallard 

 and resembling the $, but darker; no decided white 

 except under the wings. E. U. S., common. 



5. DAFILA, Leach. Pintail Ducks. 

 1. D. acuta, (L.) Jenyns. Pin -Tail. Sprig -Tail. 

 6 dark brown with purplish gloss; sides of neck with 

 long white stripes; tail cuneate when developed, central 

 feathers much projecting; $ speckled and streaked; tail 

 shorter; L. 24; W. 11; T. 9 or less. N. Am. 



6. CHAULELASMUS, Gray. Gad walls. 



1. C. streperus, (L.) Gray. Gad wall. $ barred, black 

 and white, wing coverts chestnut, greater coverts black, 

 speculum white; $ with similar markings; L. 22; W. 11. 

 N. Am. 



7. MARECA, Stephens. Widgeons. 



1. M. penelope, (L.) Bon. European Widgeon. 

 Head and neck reddish brown; top of head brownish 

 white; sides of head with green traces; L. 22; W. 11; 

 T. 5. Europe; accidental in America, Wis. {Kumlien) 

 and Atlantic Coast. 



2. M. americana, (Gm.) Steph. American Widgeon. 

 Baldpate. Head and neck grayish, speckled ; colors 

 more emphatic; sides of head with bright green patch. 

 N. Am., abundant. 



8 QUERQUEDULA, Stephens. Blue Winged Teals. 



1. Q. discors, (L.) Steph. Blue Winged Teal. ^ 

 head and neck "blackish plumbeous, darkest on the 

 crown; a white crescent in front of eye; under parts 



