[322]

Hyrtl, ibid. xxi. 1863, p. 7; Sagemehl, Morph. Jahrb. xii. 1887, p. 307.

[323]

Taylor, Edin. Journ. Sci. v. 1831, p. 33; Hyrtl, Denksch. k. Akad. Wiss. Wien. xiv. 1858, p. 39.

[324]

Hyrtl, SB. Akad. Wiss. Wien. xi. 1853, p. 302; Day, Linn. Soc. Journ. Zool. xiii. p. 198.

[325]

Burne, Journ. Linn. Soc. Zool. xxv. 1894, p. 48.

[326]

For much interesting information on aerial respiration in Fishes, see Day, op. cit.; also P.Z.S. 1868, p. 274; and Dobson, ibid. 1874, p. 312.