160 ANATID.I:. 



and north o£ Scotland, and o£ doubtful occurrence in the 

 Outer Hebrides. lu Ireland it is accidental. 



General Distribution. — The Pink-footed Goose breeds in 

 Spitsbergen, almost certainly in Iceland, and probably also 

 in Franz Josef Land. It winters in north-western and 

 western Europe. 



Genus CHEN Bole, Isis, 1822, p. 563. 

 Type : C. hyperboreus (Pall.). 



Chen=x'lv a Goose, in classical Greek; cognate with Anser, q. v. 



Chen hyperboreus. Sxow-Goose. 



Anser hyperboreus Pallas, Spicil. Zool. fasc. vi. 1769, 

 p. 25 : N.E. Siberia. 



Chen albatus (Cass.) ; JB. O. U. List, 1st ed. 1883, p. 117. 

 Chen hyperboreus {Pall.) ; Salvadori, Cat. Birds S. M. xxvii. 

 1895, p. 84 ; Saunders, Manual, 2nd ed. 1899, p. 405. 

 ffypeT'6oreits=northern, from uTr6=under, and /3ope<is=nortli wind. 



Distribution in the British Islands. — An Occasional Winter 

 Visitor. In exceptionally severe winters small numbers and 

 even flocks visit Great Britain from the Solway district 

 southwards ; also Ireland, where a few have been killed. 



General Distribution. — The Snow-Goose breeds in western 

 Arctic America and probably also in eastern Arctic Asia, 

 east of the Lena. In winter it visits western North America 

 west of the Mississippi valley southwards to Mexico, and, 

 from time to time, north-western Europe, southwards to 

 Greece and the Caspian sea. 



Chen hyperboreus nivalis. Greater 

 Skow-Goose. 



Anas nivalis Forster, Philos. Trans. Ixii. 1773, p. 433 : 

 Hudson Bay. 



Chen nivalis (Forst.) ; Salvadori, Cat. Birds B. M. xxvii. 1895, 

 p. 86 ; Sharpe, Bull. B. O. C. x. 1899, p. xv. 



Nivalis =^ snowy, i.e. snow-white. 



