[152]

Günther, Trans. Zool. Soc. vi. 1869, p. 437.

[153]

Ibid., Study of Fishes, Edinburgh, 1880, p. 191.

[154]

Ibid. p. 192.

[155]

Ibid. p. 190.

[156]

Lendenfeld, Chall. Reports, Zool. xxii. 1887, p. 277. For references to papers by Leydig, Ussow, Emery, and others, see Lendenfeld, op. cit.