124 
DUSKY aitougc. 
into Asia, hat are entirely tJifferent from any of the 
Hpeeiea on %\m Anmricnn eoDtinentr which we ahaW 
next iiulice. 
Tlie firjit of the American birds coming; nearest in 
stize and form to tlmae we liave been jnst describings 
is tlie Dusky Greuse, Tetrao obscurus nf Say, i»'hich 
was tirst noticed to seienee by that gentleman in hh 
description of the various prod net ions, the reward of 
tlie expeiiition to the Rocky Mountains. Bonaparte 
£ scared iiii^ specimen a female ; and in this country 
two beautiful representations of both saxes appearetl 
in the Northern Zoology. It is known to inhabit 
the Rocky Mountains from latitude 40' to Ib 
length it is about two feet ; and the plumage exhi- 
bits the beautiful ^lo»sy tints of the others, mixed 
with grey and white. 
The next of the Anierican grouse which we have 
to uotke b 
