CANVASS-BACK DUCK. 
219 
*^rongly tinged nith a ycllonish cream colour; in old 
**'^les, these parts are pure white, with the exception 
*otnetiines of the bristly pointed plumage of the cheeks, 
''^Uch retains its cream tint the longest, and, with the 
‘'j^inuy part of the bill, form two strong peculiarities of 
species. 
The female measures nineteen inches in length, and 
"'’enty-seven in extent ; bill, exactly as in the male ; 
*'iles of the front, u hite ; head, chin, and neck, ashy 
; upper parts of the back and wings, brownish 
secondaries only, white; tertiiils, hoary; the 
Jr^'ite secondaries form a spot on the « ing, bounded by 
black ])rimarie.s, and four hoary fertials edged with 
“*aelf; whole lower parts, a dull ash, skirted with 
“'■ownish white, or clay colour ; legs and feet, as in the 
Sle; the bill in both is marked from the nostrils 
Sik wards by a singular heart shaped outline. 
] The windpipe of the male measures ten inches in 
Sgth, and has four enlargements, viz. one immediately 
?el()vv the mouth, and another at the interval of an 
; it then bends largely down to the breast lione, to 
''j''i<k it adheres by two strong inusoles, and has at that 
r '^ee a third expansion. It then becomes dattened, and 
«fore it separates into the lungs, has a fourth enlarge- 
( much greater than any of the former, which is 
|''''y, and round, puffing out from tlie left side. The 
'’'*^*stines measured six feet; the stomach contained 
clams, and some glutinous matter ; the liver was 
*^tOarkahly large. 
JJVJS VAI^lSINKItlA, WILSON. CANV.\SS-BACK DUCK. 
WILSON, PL.VTE LXX. FIG. V. 
j celebrated American species, as far as can be 
l^l^ged from the best figures and descriptions of foreign 
is .altogether unknown in Europe. It approaches 
.Rarest to the pocliard of England, (anas ferina,) hut 
*uers from that bird in being superior in size and 
®*ght, in the greater magnitude of its hill, and the 
