3. TETRAO. 



65 



Tetrao urogallo-tetrix, Collett, Fork. Vid. Selsk. Christ. 1872, p. 235 



[N. Norway]; Boyd. Consp. Av. Ross. fasc. i. p. 35 (1884). 

 Tetrao tetrix and T. urogallus, Dress. B. Eur. v. p. 232, pi. 489, part. 



(1873). 

 Tetrao urofrallusx T. tetrix, Pleske, Uebers. Vog. Kola, p. 316 (1886) ; 



Millais, Game B. p. 19, pi. (1892). 

 Tetrao tetrix urogallus, Meyer, Unser Auer-, Racket- und Birkwild, 



etc. pp. 36-74, pis. 8-13 (1887). 



Adult male. Intermediate in size between the males of T. urogallus 

 and L. tetrix, and easUy distinguished from both by the shape of the 

 tail, which is emarginate and moderately forked, the outer feathers 

 being rather more than an inch longer than the middle pair, the 

 under tail-coverts considerably shorter than the middle tail-feathers, 

 and the chin, throat, and chest are usually glossed with rich purple 

 changing to dull greenish. 



Adtdt female. Closely resembles the female of L. tetrix, but the 

 tail-feathers are all subequal, and the under tail-coverts are much 

 shorter than the middle pair. 



Not uncommon and apparently, as a rule, fertile. 



O) 6. c? 2 imm. sk. N. Europe, 

 et St. 



c. tS ad. sk. 



d. (S ad. sk. 

 e-(j. c? ad. ; S 2 



imm. sk. 

 h. cJ ad. sk. 



Norway, Feb. 



Norway. 



Norway, Jan., Sept., Dec. 



I. S ad. sk. 



k. (S ad. skeleton. 



/. Ad. skeleton. 



m, n. Ad. skeletons. Norway. 



Russia. 



Riasan, Russia, April. 

 Norway. 



Pm'chased. 



F. Bond, Esq. [P.]. 

 Salvin-Godman Coll. 

 Prof. R. CoUett [P.]. 



Hon. W. Rothschild 



[P.]. 

 Purchased. 

 Prof. K. CoUett [P.]. 

 Zool. Soc. Coll. 

 Prof. R. CoUett [P.]. 



Hybrid between Tetrao urogallus and T. hybridus. 



Tetrao m-ogallus X Tetrao medius, Fritsch, MT. orn. Ver. Wien, 

 1887, p. 127 [Bohemia]. 



Hybrid between Tetrao urogallus and Phasianus colchicua. 

 Oapercaillie X Pheasant, Millais, Game B. p. 20, pi. (1892). 



Subsp. a. Tetrao uralensis. 



Teti-ao uralensis, Nazarow, Bull. Mosc. 1880, p. 365 ; Meyer, Uyiser 



Auer-, Racket- und Birkwild, etc. p. 10 (1837). 

 Tetrao urogaUus uralensis, Menzb. Ibis, 1887, p. 302 [3. Urals]. 



Adult male. Upper parts much paler than those of T. urogallm ; 

 the grey on the head, neck, back, upper tail-coverts, and sides pre- 

 dominates over the black, the reddish brown of the wing-covorts 

 is much lighter, and the white tips to the taU-co verts wider. The 



VOL. XXII. F 



