xxviii NATURAL HISTORY. 



winter and of enduring the scorching rays of a tropical sun, without any change being 

 produced in its plumage by the extremes of climate. Cuvier and other authors mention, 

 that in the north it is frequently found more or less white : we never saw any thing 

 corroborative of such an observation. It preserves its plumage and peculiar charac- 

 teristics, unchanged, in every part of the globe. 



8.— TETRAO LAGOPUS MUTUS {Ptarmigan). 



TETRAO LAGOPUS MUTUS.— JliVA .- Faun. Bor. Amer.—vo\. ii., p. 350. 

 TETRAO LAGOPUS.— Cku : Reg. Anim.— vol i., p. 482. Lath : hid. Orn.— vol. ii. p. 639. 



Fab : Faun. Groenl. — p. 1 14. Sab : Supp. to Parry's \st Voyage — p. cxcvii. 

 Rich : App. to Parry's 2d Voyage — p. 350. 



HosSjApp.to Parry's 3d Voy. — p. 99; and App. to Parry's Polar Voy. — p. 193. 

 PTARMIGAN.— Bn7. Zoo/.— vol. i., p. 359, pi. 57. Lath: Syn.— vol. iv., p. 744. Arct. Zool.—p. 315. 



Is not so numerous in the higher northern latitudes as the two following species. 

 A pair was shot on the east side of the Peninsula of Boothia, in latitude 71° nearly ; 

 and three or four more were obtained at Felix Harbour. 



9.— TETRAO LAGOPUS SALICETI (Willow Grouse). 



TETRAO LAGOPUS SALICETI.— EicA; Faioi. Bor. ^mer.— vol. ii., p. 351. 

 TETRAO SALICETI.— C«u .- Reg. Anim.— vol. i., p. 483. Temm.— vol. ii., p. 471. 

 Saline, App. to Franklin's 1st Journey — p. 681. 

 Rich: App. to Parry's Id Voyage — p. 347. 

 TETRAO ALBUS.— XaM .- Ind. Orn.— vol. ii., p. 639. GrneL— vol. i., p. 750. 

 Ross, App. to Parry's 3d Voyage — p. 101. 

 WHITE GROUSE.— £nM .- Syn.— vol. iv., p. 743. Arct. Zoo/.— vol. ii., p. 308. 

 WILLOW PARTRIDGE.— He«r«e's 2Vat;e/s— p. 338. 



Lihabits both shores of the inlet to the west of Boothia ; but is not to be found on 



