[19]

Argentine Ornithology, ii. 1889, p. 220.

[20]

Op. cit. pp. 218, 220.

[21]

Ornitologia Papuasia e Molucche, iii. Torino, 1882, p. 473.

[22]

Cf. E. P. Ramsay, P.Z.S. 1876, p. 122.

[23]

Cf. Murie, P.Z.S. 1867, p. 405.