[169]

Cat. Birds Brit. Mus. xxii. 1893, p. 36.

[170]

Cf. Elliot, Monograph of the Tetraonidae, New York, 1872; Dresser, Birds of Europe, vii. 1871-81, p. 187. To these books and those mentioned in the note on p. [237], the reader must be referred for fuller details regarding the Tetraoninae.

[171]

Ibis, 1880, p. 408.

[172]

Argentine Ornithology, ii. London, 1889, p. 153.

[173]

See Salmon, P.Z.S. 1879, p. 546, and cf. Durnford, Ibis, 1877, p. 193; 1878, p. 65.