No. 435.] SENSE OF HEARING IN FISHES. 



203 



the skin. Since the evidence that I have gathered from Fun- 

 dulus seems to me to show conclusively that this fish uses the 

 ears as organs of equilibration and since the skin in this species 

 is stimulated by water-currents, I believe that the rheotaxis of 

 this species probably is primarily dependent upon the skin, 

 though it may be profoundly influenced by impulses originating 

 in the ear either through a disturbance of equilibrium, as I have 

 already suggested, or possibly directly, as Professor Tullberg 



BIBLIOGRAPHY. 



1890 BATESON, W. The Sense-organs and Perceptions of Fishes: with 

 Remarks on the Supply of Bait. Jour. Mar. Biol. Assoc. United 



1894 Bethe, A. Ueber die Erhaltung des Gleichgewichts. Biol. Ccn- 



tralbl, Bd. 14. pp. 95-114, 563-582. 

 1896 BONNIER P. Sur le sens lateral. C. R. Soc. Biol., ser. 10, torn. 3, 



1880 EMERY, C. Le Specie del Genere Fierasfer nel Golfo di Napoli e 

 Region limitrofe. Fauna u. Flora Neapel. Monographic 2. 

 Leipzig, 76 pp., 9 Taf. 



Canalsysteme bei den Selachiern. Arch. ges. Physiol., Bd. 59, pp. 

 454-478, Taf. 6. 



1880 Guxther, A. C. L. G. An Introduction to the Study of Fishes. 



Edinburgh. 8°, xvi + 720 pp. 

 1782 Hunter, J. Account of the Organs of Hearing in Fish. Phil. 



Trans. Roy. Soc. London, vol. 72, pp. 379-3 8 3- 

 1892 Kreidl, A. Zur physiologischen Bedeutung des Ohrlabyrinthes. 



Neurol. Centralbl., Bd. 11, pp. 222-223. 



1896 - Ein weiterer V^siicl/ iiber das angebliche Hiiren eines 



Glockenzeichens durch die Fische. Arch. ges. Physiol. Bd. 63, 



