. The elasmobranch fishes . C D Fig. 236. Ear of Elasmobranchs. (Olive Swezy, orig.) Squalus sucldii: A. Outer view of left ear. B. Inner view of right ear. Heterodontus francisci: C. Outer view of left ear. D. Inner view of right ear. , ampulla of anterior oblique semicircular canal; , ampulla of horizontal canal; aos., anterior oblique semicircular canal; , ampulla of posterior canal; , connection from posterior canal to sacculus; , endolymphatic duct; , endolymphatic sac; /ir., horizontal canal; /., lagena; pos., posterior oblique semicircular canal; , ramus of e

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. The elasmobranch fishes . C D Fig. 236. Ear of Elasmobranchs. (Olive Swezy, orig.) Squalus sucldii: A. Outer view of left ear. B. Inner view of right ear. Heterodontus francisci: C. Outer view of left ear. D. Inner view of right ear. , ampulla of anterior oblique semicircular canal; , ampulla of horizontal canal; aos., anterior oblique semicircular canal; , ampulla of posterior canal; , connection from posterior canal to sacculus; , endolymphatic duct; , endolymphatic sac; /ir., horizontal canal; /., lagena; pos., posterior oblique semicircular canal; , ramus of eighth nerve to ampulla of anterior oblique canal; , ramus to horizontal ampulla; , ramus to macula neglecta ; , ramus to posterior ampulla ; , ramus to sacculus; , ramus to utriculus; , recessus utriculi; s., sacculus; ii., utrieulus.

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