[215]

Minchin, loc. cit. p. 110.

[216]

Bidder, Quart. Journ. Micr. Sci. xxxii. 1891, p. 631, and Minchin, Quart. Journ. Micr. Sci. xxxiii. 1892, p. 266.

[217]

Minchin, Lankester's Treatise on Zoology, p. 30.

[218]

Vosmaer and Pekelharing, Verh. Ak. Amsterdam, (2) vi. 3, 1898, p. 1.

[219]

Dendy, Quart. Journ. Micr. Sci. xxxv. 1894, p. 230.