194 
WHITE-WINGED CROSSBILL. 
dilated forms a crop of vast size, c 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 oesophagus contracts to 2 twelfths. The proven- 
triculus, e, 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, 41 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 hij k, is IO 3 
inches long, its greatest diameter 2 twelfths, its least 
li twelfths. The rectum, j k, is 1 inch 2 twelfths 
long, including the cloaca. The coeca, j, are 14 
twelfths long, and f twelfth broad. 
The trachea is 1 inch 9 twelfths long, 1^- twelfths 
broad at the upper part, gradually diminishing to 1 
twelfth ; its rings firm, and about 75 in number. 
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. 
Genus XIV.— CORYD ALINA, And. LARK-FINCH. 
Bill of the same form as in the Guiraca, but smaller, and approaching to 
that of Dolichonvx, being short, robust, conical, a little compressed ; upper 
mandible a little narrower, with the dorsal line very slight/ convex, the 
ridge indistinct, the nasal sinus very broad and short, the sides convex, the 
edges ascending for a third of their length, then direct, the notches almost 
obsolete, the tip narrow ; lower mandible with the angle short and very 
