151 



KAMPTORHYNCHUS LABRADORUS. 



Kamp. Mas. — Dorso, primariis, collo, fascia occipitali, subtusque, atris. 

 Kamp. Fern. — Capite. mento, colloque cinereo ; dorso alisque obscuris. 



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, 



IN. IN. 



Length 21± Outer toe 2| 



Bill If Middle toe 2\ 



Tarsi \\ Inner toe 2 



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 legs black ; bill black, 

 with the base and edges of the mandibles orange. 



Fuligula Labradora Bona/). Syn. 337. 



Anas Labradora Wils. Am. Orn. pi. 69. Jiff. 6. 



Rhynchaspis Labradora Steplt. Sh. Zool. 12. 121. 



Pied Duck Penn. Arc/. Zool. 2. 282. 



Lath. Gen. Syn. iii. p. 497. 



Found most plentifully on the western side of the American continent, but occasionally also 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 expansion ; 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 lamella? more elongated. 



