LONG-TAILED DUCK. 



451 



from which the various descriptions here given were 

 derived. 



The Author saw in 1845, in the collection of the late Mr. 

 Hadgraft, a perfectly white exauaple of this species, brought 

 from North America. 



A nestling in the collection of Mr. liidwell, obtained by 

 Mr. Harvie-Brown on the Petchora, is of a very dark brown 

 above, with a small light patch at the base of the bill on 

 each side, and another round each eye ; under parts greyish- 

 white, with a small brownish collar ; bill very broad and 

 short. 



The trachea of the male is about seven inches in length, 

 and very singular in its structure. At the bottom of the 

 tube five window-like apertures, as well as the kidney- 

 shaped tympanum, are closed by a delicate membrane. The 

 vignette exhibits this curious structure in two points of 

 view. The windpipe of the female is of the common or 

 ordinary form. 



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