SUBFAM. VV. ANSERINA, 
GENUS CHEN. 
Included in this section Count Salvadori places the 
following genera :—Chen, Anser, Cygnopsis, Philacte, Branta, 
NVesochen; all of which are closely allied, the genera 
differentiating chiefly, in the strength or weakness of the bill; 
its length, and the position of the serrations which are present 
upon the upper mandible. 
BLUE-WINGED SNOW GOOSE 
(Chen cerulescens. Anser coerulescens). 
The Zoological Society of London obtained specimens of 
this Snow Goose for the first time in August, 1884, and again 
in 1895, but I am not aware of the sexes. It appears very 
difficult, where the Blue Snow Goose is kept with Anser 
HHyperboreus, to prevent the two varieties from crossing. The 
Duchess of Bedford, writing from Woburn Abbey, states that 
Anser caerulescens— 
‘« Have bred here, but they always cross with the white. There is 
a flock of eleven flying about here now.” 
It has been confounded with the young of Anser Hyper- 
boreus, a slight resemblance existing. Mons. de Montlezun 
says the adults are very similar to Bernicla canagica, and that 
they are extremely wild, inhabiting the great bays of the extreme 
north, being found in Spitzbergen, the North of Russia, and 
Siberia. 
It arrives in the interior of the North American continent 
from Hudson’s Bay, incubates in the marshes of Labrador, and 
is considered excellent eating. Undoubtedly it is one of the 
