[457]

Bridge, Journ. Linn. Soc. xxvii. 1900, p. 503.

[458]

Ridewood, Journ. Anat. and Phys. xxvi. 1892, p. 26.

[459]

E. H. Weber, De aure et auditu Hominis et Animalium. Pars i. De aure Animalium Aquatilium, Leipzig, 1820; Bridge and Haddon, Phil. Trans. 184, 1893, p. 65.

[460]

Sagemehl, Morph. Jahrb. x. 1885, p. 22.

[461]

The Weberian ossicles are modified components of certain of the anterior vertebrae. The scaphium represents the neural arch of the first vertebra; the intercalarium is the arch of the second vertebra; while the tripus is probably the rib of the third vertebra. In the Characinidae and the Cyprinidae an additional ossicle, the "claustrum" is present.