386 ANATID^. 



the occipital portion of the ueck on each side descends a 

 white stripe, which hecoming broader as it passes downwards, 

 extends in front over the whole of the lower portion of the 

 neck, breast, belly, and part of the flanks ; the sides grey ; 

 vent and under tail-coverts velvet-black ; legs, toes, and 

 their membranes, blackish-brown. 



The whole length of the male, somewhat influenced by 

 the tail-feathers, is from twenty-six to twenty-eight inches. 

 From the carpal joint to the end of the wing ten inches and 

 a half. The weight varies from lib. lOoz., to 21b. 12oz. 



The female has the head reddish-brown ; the neck pale 

 brown, both parts speckled with very dark brown ; upper 

 surface of the body dark brown ; each feather almost black 

 in the centre, and pale brown on the margin ; tail-feathers 

 also dark brown, varied with pale brown ; no appearance of 

 white lines on the sides of the neck ; under surface of the 

 body nearly uniform pale brown. 



A downy nestling from Lapland, in the collection of Mr. E. 

 Bidwell, is characterized by the greyish-white of the streak 

 over the eye, and the under parts ; there being a complete 

 absence of the 3'ellowish tint observable in many other nest- 

 ling Ducks. 



The length of the windpipe in this species is about nine 

 inches and a half, the diameter of the tube slightly enlarged 

 about an inch above the bony labyrinth, the form of which 

 is figured below. 





