SEA DUCKS. 109 



t Whole head and throat brown, sharply defined from the gray or white 

 neck ; a white patch (speculum) in the wmg. 

 fti Nostril nearer the tip than the base of the bill. 

 " • 151. Am. Golden-eye 9. 



? Whole head and neck black • • ,, , i ^^,i,„ 



d A white patch on the top of the head and another on the back of the 

 a. /^ will 1 .... 166. Surf Scoter 4 . 



. MiMle'of cr'own bl^ck, bordered" by chestnut; front half of the face 



• . 155. Harlequin Duck $ . 



/. M and neck whitish,' grayish, o'r brownish ; no white in tlie wing. 



■^'■/ FcXrfn culmen reaching much farther forward than those at 



•^ the sides of the bill '''• f " 'T".!; 



/^ Feathers on culmen reaching little if any beyond those at the sides 

 •^ ■ , , .„ , 163. Am. Scoter 5 . 



of the bill 



^^fc^i"i.athers longest, sharply pointed, ^^ ^^^ 



a^^cZtnx\ iaii-feathers not 'sharply pointed; under tail-coverts gray- 

 V ■ ^ . 155. Harlequin Duck. 



ish brown 



C Wing vmder 7 -00. 

 a TaU-feather. rtiff and nan-ow ; upper tail-coverts very short. 

 • «.. Upper parts mostly rich chestnut-rufous. ^^^ ^^^^^ ^^^^ ^ 



n^ Cheeks white ,, t\ „ * 



1 1.1 1 168. Masked Duck 4. 



/up?" p^r^gtylsh or' bl-ownish; .ith so.ethucs rufous markings, 

 ■j. Lining of wing blackish; under parts gray.sh. ^^^^^^ ^^^^ ^ _ 



i.. Lining of wing whitish ; under parts grayish.^^ ^^^^^ ^^^^ ^ 



h Tail-feathei-s normal ; upper tail-coverts about half as long as tail. 



0. iau iciiLu«-ia " 1 11 ^^g Bufflehead. 



I, Feathers atsides or top of bill extending forward generally as far as nostril. 



narrow line • ., 



R FP-uhers on sides of bill extending as far as nostril. 



VBtr of b.ll on top narrow, ending posteriorly - a sharp^po.t.^^^ 

 J. Bare base of bill on top broad, the posterior end rounded^ ^^ ^^^^^ 



been shot on Long Island. 



