TBTRAO. 145 



Cat. Birds Sutherland, 1834), and another in Perthshire, 

 in 1825 (Eyton, 'Rarer British Birds,' p. 35, 1838). It 

 inhabits Iceland, Greenland, Arctic America, and Arctic 

 Siberia.] 



Genus TETRAO, Unnmus, S. N. i. p. 273 (1766). 



Tetrao = rerpawv, a bird mentioned by Athenaeus and Pliny ; akin to 

 rerpaK, rerptj, Sanskr. tittiris, Old Norse thidr, Lat. tv/rtur ; perhaps a Persian 

 word. 



Tetrao tetrix. Biack Geouse. 



Tetrao Tetrix, Linncms, S. N. i. p. 274 (1766). 



Tetrao tetrix, Naum. vi. p. 324 ; Macg. i. p. 145 ; Hewitson, 

 p. 278 ; Gray, p. 130 ; Yarr. ed. 2, ii. p. 340 ; id. ed. 3, 

 ii. p. 351 j Saunders, iii. p. 60 j Gould, iv. pi. 6 ; Harting, 

 p. 38; Dresser, vii. p. 205. 



The Black Grouse, Yarr. ed. 1, ii. p. 304. 



Tetrix = rerpi?, a bird mentioned by Aristotle ; cf. Tetrao, 



Generally distributed throughout the moorlands of Great 

 Britain, and in similar situations all over Europe, Siberia, and 

 China. 



Tetrao urogallus. Capeecaillie. 



Tetrao Urogallus, Linnaeus, S. N. i. p. 273 (1766). 



Tetrao urogallus, Naum. vi. p. 277 ; Macg. i. p. 138 ; Gray, 

 p. 130 ; Yarr. ed. 2, ii. p. 323 ; id. ed. 3, ii. p. 333 ; 

 Saunders, iii. p. 45 ; Gould, iv. pi. 5 ; Harting, p. 37 ; 

 Dresser, vii. p. 223. 



Wood Grouse, Hewitson, p. 277. 



The CapercaiUie, Yarr. ed. 1, ii. p. 289. 



Urogallus, from iirus = a kind of wild ox, and gallm = a cook. Gesner 

 formed the name from the German Amrhahn, taking Auer as equiyalent to 

 JJrus, in reference to the bird's size, comparing it to the boTine Aurochs. 



Formerly an inhabitant of Northern England, Ireland, and 

 Central Scotland. It became extinct in the last century, and 

 is now again naturalized about Taymouth and elsewhere {cf. 



