ANSERES. 243 



234. ANAS BOSCHAS. 

 (MALLARD.) 



Anas boschas, Linneus, Syst. Nat. i. p. 205 (17G0). 



The Mallard is one of the larger Ducks (wing from carpal joint 

 IO5 to 11 inches). Its axillaries and under wing-coverts are white. 

 Its greater wing-coverts are grey with black tips, emphasized by a 

 subtermiual white band. 



Figures : Dresser, Birds of Europe, vi. pi. 422. 



The Mallard has long been known to occur on the Kurile Islands 

 and in Kamtschatka (Pallas, Zoogr. Rosso-Asiat. ii. p. 256). It 

 breeds sparingly on the Kurile Islands, and more abundantly on 

 Yezzo (Blakiston and Pryer, Trans. As. Soc. Japan, 1882, p. 96) ; but 

 it is only a w^inter visitor to Southern Japan. There is an example in 

 the Swinhoe collection from Hakodadi, obtained by Captain Blakiston 

 in March (Swinhoe, Ibis, 1877, p. 146) ; and there are two in the 

 Pryer collection from the Yokohama winter-market. Mr. Ringer has 

 obtained it at Nagasaki, where the examples procured by the Siebold 

 Expedition were doubtless also obtained (Temminck and Schlegel, 

 Fauna Japonica, Aves, p. 126). 



The Mallard is a circumpolar species, but its breeding-range rarely 

 reaches as far north as the Arctic Circle. 



235. ANAS ZONORHYNCHA. 

 (DUSKY MALLARD.) 



Anas zonorhyncha, Swinhoe, Ibis, 1866, p. 304. 



The Dusky Mallard is one of the larger Ducks (wing from carpal 

 joint about 11 inches). Its axillaries and under wing-coverts are 

 white. Its greater wing-coverts are brown, broadly tipped with black. 

 Its bill is black, broadly tipped with yellow. 



Figures : Temminck and Schlegel, Fauna Japonica, Aves, pi. 82. 



The Dusky Mallard is a resident in the Japanese Islands, and is 

 common both in Yezzo and the more southerly islands (Blakiston and 

 Pryer, Ibis, 1878, p. 213), breeding on the inland lakes. There is an 

 example in the Swinhoe collection from Hakodadi (Swinhoe, Ibis, 

 1874, p. 164), and there is an example in the Pryer collection from 



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