P.Z.S. 1890, p. 69.

[74]

P.Z.S. 1894, p. 101.

[75]

Groenberg und Klinckowstroem, "Zur Anatomie der Pipa americana," Zool. Jahrb. Anat. vii. 1894, p. 609.

[76]

P.Z.S. 1896, p. 595.

[77]

Zool. Garten, 1885, p. 299.

[78]