[52]

Cf. p. [19].

[53]

J. Coll. Japan, xiii. Pt. iv. 1901, p. 507.

[54]

Arch. Biol. xviii. 1902, p. 495; Wiss. Meeresuntersuch. vi. Abt. Helgoland, Heft 1, 1903.

[55]

Quart. J. Micr. Sci. xlvii. Pt. i, 1903, p. 103.

[56]

Zeitschr. wiss. Zool. lxxv. 1903, pp. 391, 473.