. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ALIMENTARY CANAL OF REPTILES. 439 e ; moutli, but is not prolonged freely beyond it; appears to rise, l:iut this is due to tlie continuation of the niemljrane from the base of the tongue over a transverse cartilaginous plate, formed by the Ijasi- liyal, which, abutting against the velum palati, ib. d, can close the back part of the moutli. So that, when the Crocodile holds submerged a drowning prey, the water traversing the mouth has no access to the glottis.' Tlie membrane covering the dorsum of the tongue is beset by m
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ALIMENTARY CANAL OF REPTILES. 439 e ; moutli, but is not prolonged freely beyond it; appears to rise, l:iut this is due to tlie continuation of the niemljrane from the base of the tongue over a transverse cartilaginous plate, formed by the Ijasi- liyal, which, abutting against the velum palati, ib. d, can close the back part of the moutli. So that, when the Crocodile holds submerged a drowning prey, the water traversing the mouth has no access to the glottis.' Tlie membrane covering the dorsum of the tongue is beset by mucous crypts ; the ' ceratoglossi' divide into fasciculi, which decussate across the median line. A salivary apparatus is as little specialised in Batrachians as in Fishes. Mucous crypts upon the tongue or palate subserve the need of lubricating the quickly swallowed and unmasti- cated food. In Lizards a series of orifices of raucous crypts extend along the lip-groove of both jaws. In the Crocodile, besides the lingual fol- licles, there are groups of more com- plex ones on each side, behind the palato-nares, ojjening into the meshes of the plicated faucial membrane. In Chelonians there are groups of mucous follicles below the tongue, representing the sublingual glands of Mammals. The labial glands are abundantly de- veloped in O^jhidians. The secretion of the lacrymal glands is added to the lubricating fluid of the mouth. The poison-gland of venomous Serpents may be regarded as a specially de- veloped parotid, but will be described in another section. In all Reptiles the secretions entering the mouth are rather mucous and mechanical in func- its back part 298. Jlontli, gullet md stomach, Cioc ) lile. CCL. ' .X5. vol. iii, p. 72, prep. no. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Owen, Richard,
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Keywords: ., bookauthorowenrichard18041892, bookcentury1800, bookdecade1860
