[39]

An. Mus. La Plata, Pal. Argent. i. 1891, pp. 20, 37.

[40]

Revist. Argent. i. 1891, pp. 441-453.

[41]

Bol. Inst. Geogr. Argent. xv. 1895, pp. 11, 12.

[42]

Ibis, 1893, pp. 40-47; and Nat. Sci. 1894, p. 125.

[43]

Ibis, 1896, pp. 1-12; see also Gadow, op. cit. pp. 586, 587.