. A manual of elementary zoology . Zoology. THE DOGFISH 369 an external mandibular, and a hyoidean. Of these, it is the internal mandibular which corresponds to the mandibular of the frog. The palatine and hyomandibular branches pass together through the same foramen with the main part of the fifth. The eighth or auditory nerve passes into the auditory capsule to supply the inner ear. The ninth or glossopharyngeal nerve arises from the side of the medulla behind and rather below the eighth, passes vm. \s v w& yiop. fop-. Js Whm. sp\ VHpsp.', Wei"-\ Vfrhi. VMi-m, Fig. 264.—A diag
. A manual of elementary zoology . Zoology. THE DOGFISH 369 an external mandibular, and a hyoidean. Of these, it is the internal mandibular which corresponds to the mandibular of the frog. The palatine and hyomandibular branches pass together through the same foramen with the main part of the fifth. The eighth or auditory nerve passes into the auditory capsule to supply the inner ear. The ninth or glossopharyngeal nerve arises from the side of the medulla behind and rather below the eighth, passes vm. \s v w& yiop. fop-. Js Whm. sp\ VHpsp.', Wei"-\ Vfrhi. VMi-m, Fig. 264.—A diagram of the distribution of certain cranial nerves in the dogfish. The nerves shown in black are distributed to the system of sense-tubes which includes the neuromast ampullae (P- 373)> lateral line, and labyrinth of the ear. The shaded nerves are distributed to visceral arches. , Roots of the nerves; , , ,, mandibular, maxillary, and (superficial) ophthalmic branches of the fifth nerve; Vop'., deep ophthalmic nerve, not mentioned in the text, inconspicuous in the rough hound, but large in many other fishes (p. 378); , , buccal and external mandibular branches of the seventh nerve, distributed to some of the neuromast ampullae; , , , , , hyoidean, internal mandibular, ophthalmic, palatine, and prespiracular branches of the seventh nerve ; , postspiracular division of hyomandibular branch of seventh nerve; , , lateral line and visceral branches of the tenth nerve; , gill slits; mouth ; sp., spiracle. through a passage in the cartilage of the auditory capsule, emerges by its foramen behind the capsule, and turns down the first branchial arch, after giving off a small prebranchial branch to the hyoid arch. The tenth or vagus nerve arises by a number of roots immediately behind the ninth. It leaves the skull by a foramen beside the occipital condyle, and runs backwards along the anteri
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
