[247]

Ibid. p. 59.

[248]

Ibid. p. 58, pl. xi. Fig. 6.

[249]

Günther, op. cit. p. 544.

[250]

Newton Parker, op. cit. p. 141.

[251]

Macallum, Journ. Anat. and Phys. xx. 1886, pp. 618, 619.