[17]

Morgan, J. Morphol. v. 1891, p. 422; ix. 1894, pp. 44, 48, 72.

[18]

Willey, Zool. Res. Pt. iii. 1899, p. 245.

[19]

Zool Res. Pt. iii. p. 228.

[20]

Spengel, Monogr. pp. 179, 187; Willey, Zool. Res. iii. p. 236.

[21]

Willey.