[167]

[Hamann subsequently withdrew these statements.]

[168]

Leuckart, The Parasites of Man, English Trans. by W. E. Hoyle, Edinburgh, 1886, p. 56.

[169]

O. Bütschli, Zeitschr. wiss. Zool. Bd. xxvi. 1876, p. 103.

[170]

O. Hamann, Centrlb. Bakter. vol. xi. 1892, p. 501.

[171]

Zeitschr. wiss. Zool. vol. xxiii. 1873, p. 402.