adc 



~Jui 



ns 



rs 



ms 



FIG. 216. MEMBRANOUS LABYRINTH OF VARIOUS FISHES. (After G. Ret/Jus.) 

 A, Afyxine glutinosa, from the inner side. 



raa, ctp, anterior and posterior ampulla ; cc, canalis communis ; de, cluctus endo- 

 lymphaticus ; era, crista acustica of the anterior, and crp, of the posterior 

 ampulla ; me, macula acustica communis ; ra, rp, anterior and posterior 

 branches of the auditory nerve ; xc, saccus communis ; se, saccus endolym- 

 phaticus. 



A 1 , Acipenser sturio, from the outer side ; B, Ckimcera monxtroxa, from the inner 

 side ; C, Perca JluviatUis, from the inner side. 



aa, ae, ap, anterior, external, and posterior ampulla ; ac, auditory nerve ; ana, 

 apex of the sinus superior ; era, ce, cp, anterior, external (horizontal) and 

 posterior semicircular canals ; cr, crista acustica of the ampullae ; o/*, 

 utriculo-saccular canal ; <le, ductus endolymphaticus, which in B opens 

 externally through the skin ha at adc ; f, lagena (cochlea); mn, macula 

 acustica neglecta ; ms, macula acustica of the sacculus ; -nut, macula acustica 

 of the recessus utriculi ; o (in C), otoliths in the recessus utriculi, sacculus, 

 and lagena ; pi, papilla acustica of the lagena ; raa, rae, rap, ru, rs, rf, rn, 

 tlie various brandies of the auditory nerve ; rec, recessus utriculi ; s, sac- 

 culus ; ,sv . saccus endolymphaticus ; sx, *p, sinus utriculi superior and 

 posterior ; , utriculis. 



