109 
PIED DUCK. 
Male duck, with the back, primaries, neck, occipital fascia, and 
below black. 
Fem. duck, with the head, chin, and neck cinereous; the back and 
wing dark. . 
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Male: head, neck, breast, scapulars, wing coverts, and secondaries 
white ; crown, a collar round the neck, belly, back, quills, and a streak 
on the occiput, black. 
Fem.: about one inch shorter than the male; head, chin, and 
neck ashy grey; back and wings brownish slate-colour; below ashy ; 
legs in both sexes deep brown, with the webs black; bill black, with 
the base and edges of the mandibles orange. 
Fuligula Labradora .........44. Bonap. Syn. 337. 
Anas Labradora .....c.cccsséscaee Wils. Am. Orn. pl. 69, fig. 6. 
np ey ha Labradora ....... eke Sh. Zool. 12. 121. 
Pied Duck . Bes . Penn. Arct. Zool. 2. 282. 
Lath. Gen. Syn. iti. p. 497. 
Camtolaimus ...... CR ae nee G. h. Gray. 
Found most plentifully on the western side of the American Con- 
tinent, and occasionally on the eastern. Nothing is known of its 
nidification. 
Wilson gives the following description of the trachea :—‘‘ The 
windpipe of the male measures ten inches in length, and has four 
enlargements, viz., one immediately below the mouth at the interval 
of an inch; it then bends largely down to the breast bone, to which 
it adheres by two strong muscles, and has at that place a third expan- 
_ sion; it then becomes flattened, and, before it separates into the lungs, 
has a fourth enlargement much greater than the former, which is 
bony and round, puffing out from the left side. The bill of this species 
differs much in form from any in the family, being broad and thin at 
the tip, and having the lamellz more elongated.” 
CALLICHEN CARYOPHYLLACEUM. 
Cal.—Fuscum, capite colloque caryophyllaceis. 
