[577]

Prouho, loc. cit.

[578]

Arch. Zool. Exp. 2 ser. v. 1887, p. 446.

[579]

Quart. J. Micr. Sci. xxxiv. 1893, p. 199; xxxix. part i. 1896, p. 71.

[580]

Jullien, Mém. Soc. Zool. France, iii. 1890, p. 381.

[581]

Cori, Zeitschr. wiss. Zool. lv. 1893, p. 626.