ANSER MIDDENDORFFI. 83 



Government, and almost everywhere throughout Siberia between Lake 

 Baikal and the Sea of Japan, near great rivers and lakes southwards to 

 50° N. lat. and possibly still farther south. 



'' It migrates to pass the winter in China and Japan, but how far it 

 descends southwards for this purpose we have no idea." 



As regards its breeding, he writes : " This goose breeds alike in the 

 lowlands and on the hills '' ; and quotes Maak to the effect : " It builds its 

 nest near the Vilyui and its tributaries, on lakes far removed from 

 habitations, and young in down were found as early as June 8th." 



The eggs are described as being almost white or yellowish, but as soon 

 becoming much soiled with incubation. In length they vary between 

 2'89 and 3*68 inches, and in breadth between 2*09 and 2'44 ; the smallest 

 measurements are probably abnormal, the next smallest measuring 

 3-07 X 2-11. 



a 2 



