NEW SPECIES OF GROUSE. 
331 
the Rocky Mountains. Its summer dress is interme- 
diate in colour between that of T. lagopus and 
f vpestris ; but it differs from both these species in its 
smaller size, and in its tail being totally white at all 
seasons. The sexes of my specimens were not noted ; 
but none of them have the black eye stripe ; and Mr 
Drummond, who killed great numbers, is confident that 
that mark does not exist in either sex.” — Richardson. 
Account of several new species of Grouse, recently 
discovered by Mr David Douglas, among tie Rocl/y 
Mountains. 
The interesting species of grouse, which we have 
bow the pleasure of noticing, were discovered by Mr 
David Douglas, the intelligent traveller employed by 
the London Horticultural Society to explore some of 
the northern regions of America. They are described 
a nd figured in Mr James Wilson’s elegant Illustrations 
°f Zoology, and specimens of the whole are deposited in 
the Edinburgh College Museum. 
The following details, communicated by Mr James 
nelson, will enable those of our readers who may not 
have an opportunity of consulting his splendid Illustra- 
tions, to form a distinct conception of these beautiful, 
a ud interesting birds. 
“ The most remarkable of the species, to which we 
have now to direct the attention of our readers, is 
the Tetrao urophasianus, or pheasant-tailed grouse, 
^e largest of all the American species ot the genus, 
atl d, excepting the capercailzie, or wood grouse, the 
bugest, to be met with in any country. This bird 
i y as observed by Messrs Lewis and Clark, by whom 
3 is mentioned under the name of the ‘ cock of the 
Plains.’ A short notice of it was also published some 
t*me ago, in the Zoological Journal, by Charles Lucian 
"onaparte, who obtained an imperfect specimen ot the 
tfiale in London. 
“ The length of this bird, when full grown, is thirty- 
