Archive image from page 1053 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 964 PISCES. the greater part of the roof of the mouth, and likewise supporting all the formidable teeth with which this jaw is armed. Posteriorly it gives attachment to the inferior maxilla by two large articulating surfaces, and above it is only con- nected to the skull by the muscles implanted into it. From its upper margin it gives off a process, shown in the figure, which remains permanently cartilaginous, and in the living state is imbedded among the mu
Archive image from page 1053 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana03todd Year: 1847 964 PISCES. the greater part of the roof of the mouth, and likewise supporting all the formidable teeth with which this jaw is armed. Posteriorly it gives attachment to the inferior maxilla by two large articulating surfaces, and above it is only con- nected to the skull by the muscles implanted into it. From its upper margin it gives off a process, shown in the figure, which remains permanently cartilaginous, and in the living state is imbedded among the muscles that form the inner wall of the orbit; the whole is thus left completely moveable so as to give great latitude to the motions of the jaws. The superior maxillary bone (Jig. 497, d) and the intermaxillary bone (c) are of very small size, being merely imbedded in the substance of the upper lip and connected superiorly by ligament to the face and the piece last described. Inferiorly these bones are attached to a third (fig. 497, e,) which is fixed by ligaments to the outer Fig. 497. Inferior view of the skull, branchial arches, and pec- toral apparatus, of Squalus centrina. (After Cams.) a, nasal cavity; b, (.Ifactory organ; c, superior labial or intermaxillary cartilage ; d, intermaxillary bones ; e, inferior portion extending between the preceding and the lower jaw; e, e, e, e, central sternum-like pieces ; /. /, /,/, branchial arches; «', i, i, branchial appendages; k, scapular zone ; I, m, n, pectoral fins. surface of the lower jaw at about one-fourth part of its length from the symphysis, so that the three together form an osseous and ligamentous band that circumscribes the angle of the mouth and materially diminishes the rictus of the jaws. The inferior piece (e) is most probably one of the elements belonging to the lower jaw detached from its usual connections with that bone. The inferior maxilla (jig. 497,J') consists of two lateral halves united by a sympbysis
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