. LX. 141 



of the common Domestic Duck; various hybrids of this 

 species with others are described. 



2. A. 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. SPKIG-TAIL. 

 $ 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. GADWALLS. 



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. 3 

 head and neck blackish plumbeous, darkest on the 

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



