Elements of the comparative anatomy Elements of the comparative anatomy of vertebrates elementsofcompar00wied Year: 1886 j\r FIG. -i'3.— DIAGRAM SHOWING TIIK OF THE KMI;KYMI- SKELETON. A', nasal capsule; A, eye; 0, auditory capsule ; Tr, trabeculie, which, from bent down anteriorly (t), a^ain extend forwards in a line with tin- vertebral axis; M, Meckel's cartilage; Qx, quadrate; //»/, hyoid nn-h : /•'. /•', branchial arches, between which are seen the gill-clefts; S, spiracle; (.'•'. i.'o, basi-liy.'id and basi-branchials. supplied by the facial nerve, becomes modified from th
Elements of the comparative anatomy Elements of the comparative anatomy of vertebrates elementsofcompar00wied Year: 1886 j\r FIG. -i'3.— DIAGRAM SHOWING TIIK OF THE KMI;KYMI- SKELETON. A', nasal capsule; A, eye; 0, auditory capsule ; Tr, trabeculie, which, from bent down anteriorly (t), a^ain extend forwards in a line with tin- vertebral axis; M, Meckel's cartilage; Qx, quadrate; //»/, hyoid nn-h : /•'. /•', branchial arches, between which are seen the gill-clefts; S, spiracle; (.'•'. i.'o, basi-liy.'id and basi-branchials. supplied by the facial nerve, becomes modified from those lying behind it: the latter, r branchial arches proper, an- supplied by the glossopharyngeal and vagus. Nevertheless, I'TTTJTX |M;;. 47.— SKMI-IU \<;I;AMMATIC HF AX ELASMOBRANCH SKULL, SHOWING TIM. RELATIONS OJ nn: CKANIAL J\', nasal capsu^r : ./, eye ; O. nudifory capsule : Tr, tralirruli : Q and /''.'. ami palatopterygoid, whic-h an; bound to tlic trabecula by li.'.vun.'iit at i : i/. Meckel's cartilage; t, i1, labial cartilages ; 27, hyomandibular ; f , hynid arch; a to e, branchial arches, between \\ tin- u'ill-r].-l'ts (/ to /') are seen : X, spiracle : i\..sof Elasmobranclis they even still do so. Originally unsegmented in most cases, the individual arches may become br< k«-u up into ditfeivnt (as many as four) pieces, of
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