Cf. Moritz Wagner, Abh. Akad. Münch. x. 1866, p. 101, and Whymper, Trav. Andes Ecuador, 1892, p. 251.

[687]

Cf. Wyman, Amer. Journ. Sci. (2) xxvii. 1859, p. 9, and Vaillant, C. R. Ac. Sci. cxxvi. 1898, p. 544.

[688]

Cf. Taylor, Edinb. Journ. Sci. v. 1831, p. 33; Hyrtl, Denkschr. Ak. Wien, xiv. 1858, p. 39. On the osteology, cf. Gill, Proc. U.S. Nat. Mus. xiii. 1890, p. 299.

[689]

Cf. L. Jacoby, Zeitschr. Ges. Naturw. 1867, p. 257.

[690]

The biology of the Eel embraces an enormous literature. The following general recent accounts should be consulted:—L. Jacoby, Die Aalfrage (Berlin, 1880), translated in Rep. U.S. Fish Comm. 1882, p. 463; H. C. Williamson, Rep. Fish. Board Scotl. xiii. 3, 1895, p. 192; G. B. Grassi, Proc. R. Soc. lx. 1896, p. 260, and Mon. Zool. Ital. viii. 1897, p. 233; C. H. Eigenmann, Trans. Amer. Micr. Soc. xxiv. 1902, p. 5. For a summary of our knowledge of the larval forms of European species, cf. J. T. Cunningham, Journ. Mar. Biol. Ass. (2) iii. 1895, p. 278.

[691]