WHITE-WINGED CROSSBILL 
471 
2 inches and 8 twelfths long, when dilated forms a crop of vast size, ¢ d, 
which lies chiefly on the right side of the neck, 
but also passes behind so as to appear on the left 
side. This form occurs equally in the Common 
Crossbill, and seems to be peculiar to this genus. 
The greatest breadth of the crop is 10 twelfths. 
On entering the thorax, the cesophagus contracts 
to 2 twelfths. The proventriculus, ¢, is bulbiform, 
with a diameter of 3 twelfths. The stomach, /, is 
a strong gizzard of rather small size, somewhat 
bent in the same manner as that of the Pine 
Grosbeak, 42 twelfths long, 6 twelfths broad ; its 
muscles distinct; the cuticular lining very firm ¢ 
but thin, longitudinally rugous, and of a light red 
colour. The intestine, g 4 ij k, is 103 inches long, 
its greatest diameter 2 twelfths, its least 14 twelfth. 
The rectum, j /, is 1 inch 2 twelfths long, in- 
cluding the cloaca. The ceca, j, are 14 twelfth 
long, and 4 twelfth broad. 
The trachea is 1 inch 9 twelfths long, 14 twelfth : 
broad at the upper part, gradually diminishing to 
1 twelfth; its rings firm, and about 75 in num- \N 
ber. The inferior laryngeal muscles are large. 
The bronchi are formed of about 15 half-rings. 
The twigs represented in the plate are those of 
a species of Alder common in Newfoundland. 
\ZZ=S 
BES 
