190 



8 



localities, and appears to consider that more than one species may be distinguished by this 

 character. Mr. Elliot, in his Monograph of the Tetraonidae, however, clearly demonstrates that 

 the size of the bill is merely an individual variation, and founds his opinion on numerous 

 specimens from Great Slave Lake, Mackenzie River, Fort George, Lapland, Sweden, and New- 

 foundland, stating that the size of the bill ranges all the way from the robust and powerful to 

 almost as small and delicate as that which characterizes Lagopus mutus. I may add that the 

 series I have examined fully bears out the view of the case taken by Mr. Elliot. 

 The specimens figured are those described, and are in my collection. 



In the preparation of the above article I have examined the following specimens : — 



E Mus. H. E. Dresser. 



a, <3 . Raumo, Finland, May (H. E. D.). b, 6 ad. Norrland, September 16th, 1871 (Meves). c, <3 juv. 

 Norrland, September 26th, 1871 {Meves). d, ? ad. Norrland, August 12th, 1871. e, d ad. Christiania, 

 Norway, December 1870 (Collett). f, d ad. Siberia, winter plumage (Dode). 



E Mus. A. Newton. 



a, j. Muonio-vaara, West Bothnia, May 1857. b, <S . Mukka-uoma, June 3rd, 1857. c,d,e,f. Muo- 

 nioniska, October 1856. g, h. Newfoundland, winter plumage (Reeks). i. Newfoundland, spring 

 plumage (Ree ks) . k. Moose Factory. I. York Factory, Hudson's Bay Territory, m. Alaska (Whymper). 



E Mus. H. B. Tristram, 

 a, b, <3 , c, 2 • Kjterringoe, Norway, July 1852. d. Norway, March. 



