239 
species has sometimes been confounded 
with the Bean Goose. 
It has been generally considered that 
the colour of the nail, or tip of the beak, 
is th e criterion of distinction between the two 
above mentioned species ; it having been 
supposed that, that part is always white 
in the White Fronted Goose and that in 
the present species the same part is always 
black ; this is not strictly correct, as speci- 
mens of the White Fronted Goose may be 
found in collections, the tips of whose 
beaks are black ; nevertheless the difference 
in the form of the beak of , the two species, 
independent of the colours, are so striking, 
that a careful examiner cannot easily be 
mistaken. 
This species, like the Bernacle has a 
callous knob upon the elbow of the wing. 
The female is like the other sex in plu- 
mage, rather less in size, but consi- 
derably larger than the White Fronted 
Goose. 
They are reported to breed in great 
numbers in the Isle of Lewis and others of 
the Hebrides, and also at Hudson's Bay. 
