[407]

Vincent, Trans. Zool. Soc. xiv. Part iii. 1897, p. 41. For bibliography see Vincent, Internat. Monatsschr. f. Anat. u. Phys. xv. 1898, p. 319.

[408]

Giacomini, quoted by Swale Vincent, Journ. Anat. and Phys. xxxviii. 1903, p. 41.

[409]

Vincent, op. cit. pp. 32, 33.

[410]

Balfour, Quart. J. Micr. Sci. xxii. 1882, p. 12.

[411]

Swale Vincent, op. cit. p. 78.