The elasmobranch fishes . elasmobranchfish03dani Year: 1934 THE ELASMOBRANCII FISHES 235 It is so in LainiKi, Scoliodon (fig. 211a), Galeus, Tvijcjon, and Myliobaiis (fig. 212). In all these the surface is thrown into numerous irregular folds or convolntions. The myelenc'ei)halon (medulla) {nied., figs. 211-21:]) when seen in dorsal view is shaped like the letter Y, the anterior limits of the Y being made by the restiform bodies, corpora restiforme {cr.). These in many of the simpler types of sharks, such for example as Scymnus, appear as prominent structures. In others the corpora restiforme

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The elasmobranch fishes . elasmobranchfish03dani Year: 1934 THE ELASMOBRANCII FISHES 235 It is so in LainiKi, Scoliodon (fig. 211a), Galeus, Tvijcjon, and Myliobaiis (fig. 212). In all these the surface is thrown into numerous irregular folds or convolntions. The myelenc'ei)halon (medulla) {nied., figs. 211-21:]) when seen in dorsal view is shaped like the letter Y, the anterior limits of the Y being made by the restiform bodies, corpora restiforme {cr.). These in many of the simpler types of sharks, such for example as Scymnus, appear as prominent structures. In others the corpora restiforme are entirely hidden by the enlarged cerebellum (Myliohafis, fig. 212). Both in dorsal and in ventral view the medulla is conical

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