. The Cambridge natural history. Zoology. SKULL 17 A pair of prefrontal bones is present in most Salamandridae, Salamandra, Triton, Arablystoma, especially in the larva, and in Cryptohranchus; these bones are absent in Amphiicma, Necti(,rus, Proteus, and Siren. The lacrymalia are still separate in some Amblystomatinae,. Fig. 3.—Skulls of Urodela. 1, Salamandra ma- culosa, ventral view, and 2, dorsal view; 3, Axolotl stage of AmUystoma ; 4, adult stage of Amblystoma ; 5, Salamandrina perspicillata (after Wieders- lieim) ; 6, Salamandra ma- ciUosa, dorsal view of the lower jaw. A,
. The Cambridge natural history. Zoology. SKULL 17 A pair of prefrontal bones is present in most Salamandridae, Salamandra, Triton, Arablystoma, especially in the larva, and in Cryptohranchus; these bones are absent in Amphiicma, Necti(,rus, Proteus, and Siren. The lacrymalia are still separate in some Amblystomatinae,. Fig. 3.—Skulls of Urodela. 1, Salamandra ma- culosa, ventral view, and 2, dorsal view; 3, Axolotl stage of AmUystoma ; 4, adult stage of Amblystoma ; 5, Salamandrina perspicillata (after Wieders- lieim) ; 6, Salamandra ma- ciUosa, dorsal view of the lower jaw. A, Articulare ; Cj, Gj, outer and inner occipital con- dyles ; Ch, choana or posterior nasal opening ; d, dentary ; Ji, ethmoid ; F, frontal; LO, lateral occipital; M, maxillary; iV, nasal; iK),nostril; OS, orbito- sphenoid ; P, parietal; Pf, pre- frontal ; PI, palatine; Pm, pre- maxillary ; Po, prootic ; PS, parasphenoid; PS'^, stapes ; Vo, vomer ; II, VII, X, exits of the optic, facial, and glosso-vagus nerves. Banidens and HynoUus. A pair of nasalia are generally present, but are absent in Kecturus, Proteus, and Siren. The ]iarasphenoid is' furnished with teeth in the Plethodontinae and Desmognathinae. Separate palatine bones exist in Necturus and Proteus, and in the larva of Amblystoma, but in the adult form they fuse with the vomers, producing the vomero-palatiues characteristic of the majority of Urodela. VOL. VIII ^. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
