. On the anatomy of vertebrates [electronic resource] . Section of mouth and nose, Porpoise. the low, firm, ridge of integument, supported by adipo-fibroustissue with scarce a trace of 6 orbicularis oris: while in theWhale (Balcena) the upper lip falls down like a thick curtainsome feet in depth concealing the baleen, and overlapping the 384- ANATOMY OF mandible when the mouth is closed. The side-walls of the monthare not dilatable and contractile so as to vary the capacity of thebuccal cavity, like the 4 cheeks in most other mammals. As arule, in the present class, the mouth is
. On the anatomy of vertebrates [electronic resource] . Section of mouth and nose, Porpoise. the low, firm, ridge of integument, supported by adipo-fibroustissue with scarce a trace of 6 orbicularis oris: while in theWhale (Balcena) the upper lip falls down like a thick curtainsome feet in depth concealing the baleen, and overlapping the 384- ANATOMY OF mandible when the mouth is closed. The side-walls of the monthare not dilatable and contractile so as to vary the capacity of thebuccal cavity, like the 4 cheeks in most other mammals. As arule, in the present class, the mouth is terminal: when not so, arostral production, analogous to that in Sharks, makes the open-ing inferior, as in the Tapir, fig. 155. In the Chrysochlore themouth is a small triradiate slit, like that of a leech, on the undersurface of the muzzle : it has a like inferior position, but is moredeeply cleft in Shrews, in which the groove that runs along themid-line of the under surface of the snout represents the thirdray of the closed mouth. The remoteness of the mouth from the end of the muzzle is in the ratio of298 the length of the latter: consequently, among the Shrews, it is greater inthose (Petrodromus, Rhynchocyon, ) which, from the production of thesnout, have been called e ElephantHeadofRhynchocyon. LXxXiv. Mice: still more so in the Elephant itself,
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Keywords: ., bookcentury1800, booksubject, booksubjectbirds, booksubjectfishes
