THE ARCTIC FAUNA. 



141 



belonging to the genus Somateria. Three species 

 have visited the British Islands. The common Eider 

 Duck (S. mollissima}, which is of such high com- 

 mercial value, is abundant in Norway and northward, 



FIG. 9. The Great Auk (Aka imfcniris). 



throughout the Polar Regions. The appearance of 

 the King Eider (S. spectabilis) on our coasts is an 

 extremely rare occurrence, and even in Norway it is 

 only known as a visitor, but on Novaya Zemlya and 

 along the Arctic shores of Siberia, in Greenland and 



