The True Ducks. 233 



is black with the sides of the upper man- 

 dible blue ; in the female, the bill is greyish 

 black above, reddish brown beneath. The 

 irides are brown ; the legs and feet are 

 greyish plumbeous, blackish on the central 

 portion of the webs. Weight up to 2| Ib. 



