[217]

See, however, Goodrich, Quart. Journ. Micr. Sci. xlv. 1901, p. 311.

[218]

Bashford Dean, Anat. Anz. xi. 1896, p. 673.

[219]

Budgett, Trans. Zool. Soc. xvi. Part vii. 1902, p. 328.

[220]

Thacker, Trans. Connecticut Acad. iv. 1877, p. 233.

[221]

Traquair, Geol. Mag. vii. 1890, p. 15; Goodrich, l.c.