RIVER DUCKS. 101 



«». Cheeks and under parts ohestnut-rufous. 141. Cinnamon Teal ( 3 ad.), 

 c'. Cheeks finely streaked with blackish. 

 c'. Under parts whitish, sometimes washed with brownish, streaked or 

 spotted with blackish ....... 140. Blue-winged Teal 9 . 



c». Under parts heavily washed with chestunt-rutbus and mottled with 



l^lack 141. Cinnamon Teal 9 . 



I Wing over 8-50. 

 A. Belly white or grayish white, not conspicuously streaked or spotted. 



a. Whole head shining dark green . ... 132. Mallaed ( s ad.). 



b. Center of head white or whitish, a large streak behind the eye. 



13V. Baldpate ( i ad.). 

 V. Throat white, crown green or grayish green, tips of primaries greenish. 



144. Wood Duok. 

 d. Throat blackish, center of crown buffy, rest of head rufous. 



136. Widgeon ( S ad.). 

 «' Throat and sides of head olive-brown, darker on the crown. 



143. Pintail ( 9 ad.). 

 /. Throat, crown, and sides of head more or less finely streaked with 

 blackish. 



f^. Wing-ooverts with more or less chestnut .... 135. Gadwall. 

 g^. No chestnut in wing-coverts. 

 ^». Axillars* and sides barred with black . . . . 143. Pintail 9 . 

 g'. Axillars white or speckled with black, sides plain brownish. 



137. Baldpate e . 

 g*. Axillars white, sides thickly spotted or barred with black. 



135. Gadwall 9 . 

 £. Under parts conspicuously mottled, spotted, or streaked, or feathers 

 margined with chestnut-rufous. 



a. With white in wing-ooverts. 



o'. Lesser wing-coverts ashy blue 142. 8hoveler 9 . 



S'. Lesser wing-coverts brownish gray, bordered with white or tipped 



with black. 



b'. Speculum f purple 182. Mallard 9. 



5=. Speculum gray and white 135. Gadwall 9 . 



b. No white in wing-ooverts. 



a. Throat fulvous or buffy without streaks . . . 184. Florida Duck. 



b. Throat finely streaked with black 133. Black Di-ck. 



0. Belly chestnut , 142. Shoveler s . 



133. Anas boschas Linn. Mallard (see Fig. IT, a). Ad. i . — 



Whole head and throat glossy greenish or bluish black; a white ring around 

 the neck ; breast rich chestnut ; belly grayish white, finely marked with wavy 

 black lines ; under tail-ooverta black ; upper back dark grayish brown ; rump 

 and upper tail-coverts black ; longer upper tail-coverts recurved ; speculum 

 rich purple, bordered at the base and tip by narrow bauds of blach and white. 

 Ad. 9 . — Top and sides of head streaked with fuscous and bufi'y ; back fuscous, 



* See Fig. 64. + A colored patch in the wing. 



