WHTTE-HEADEU DUCK. 163 



inflated beak, tlie very small nail, and the legs and 

 feet black. 



My figure is from a specimen sent me by Mr. 

 Tristram. 



It has also been figured by Becbstein, Tassclienb. 

 Deut., vol. ii, p. 444, No. 29; ]S[aumann,.Vogel jSTacbtr., 

 pi. 40, fig. 79, (male and female;) Stor, Degli Uccelli, 

 pi. 577; Savigny, Egypte, pi. 10, f. 2; Gould, pi. 383. 



