[287]

Ramsay Wright, Journ. Anat. and Phys. xix. 1885, p. 476.

[288]

Sagemehl, Morph. Jahrb. ix. 1884, p. 213.

[289]

Ramsay Wright, op. cit. p. 482.

[290]

See p. [335].

[291]

F. W. Müller, Arch. Mikrosk. Anat. xlix. 1897, p. 463.