CANVAS BACK. 153 



of back, chest, rump, upper and lower tail coverts, black. Rest 

 of plumage, white, vermiculated on back, and anal region, with 

 black. Wings similar to those of the Red Head. Bill, sloping 

 gradually from outline of head, widening very slightly toward 

 the end and longer than head, black. Tail, black with a grayish 

 luster. Iris, red. Legs and feet, plumbeous. Total length, 

 about 20 inches; wing, 9^; culmen, 2 3 * ff ; tarsus, i^. 



Adult Female. Head, neck, chest, and upper part of back, 

 umber brown, darkest on top of head. Rest of back, scapulars, 

 and sides, dark brown; tips of feathers vermiculated with ashy 

 white. Rump, seal brown. Upper tail coverts vermiculated 

 with yellowish brown. Tail, dark brown on outer, ashy on inner 

 webs. Greater wing coverts, slate; outer webs of secondaries, 

 bluish gray. Bill, black. Legs and feet, plumbeous. Under 

 parts, white or yellowish white. Total length, 20 inches; wing, 9; 

 culmen, 2^; tarsus, i. 



