. Text book of zoology. Zoology. Class 4, Beptilia. 41 r consists of several bones : of these the most anterior may be anchylosed â with its fellow of the other side, as in Ohelonia. The hyoid. Fig. 335. lands Skullof a Lizard (Varanus).â2and4o£a Cro co dile, dorsal and ventral. C occipital condyle, Ch posterior nares, co columella, E Buatachian tube, Fr frontal, Ju jug'al, 1 in 2 lachrymal (in 1 a membrane bone present in some forms), Mx maxiUa,, Na nasal, 06 basi-, 01 ex-, Os supra-occipital, Pa parietal. Pal palatine, Pf postfrontal, P)/prefrontal, Pt pterygoid, Px premaxiUa. Q quadrate, Q
. Text book of zoology. Zoology. Class 4, Beptilia. 41 r consists of several bones : of these the most anterior may be anchylosed â with its fellow of the other side, as in Ohelonia. The hyoid. Fig. 335. lands Skullof a Lizard (Varanus).â2and4o£a Cro co dile, dorsal and ventral. C occipital condyle, Ch posterior nares, co columella, E Buatachian tube, Fr frontal, Ju jug'al, 1 in 2 lachrymal (in 1 a membrane bone present in some forms), Mx maxiUa,, Na nasal, 06 basi-, 01 ex-, Os supra-occipital, Pa parietal. Pal palatine, Pf postfrontal, P)/prefrontal, Pt pterygoid, Px premaxiUa. Q quadrate, Qj (and the lower Q in 1) quadrato- jugal, Sp'o basisphenoid, Sq squamosal, Tr transverse bone, Vo vomer.âAlter Gegenbaur. apparatus, , the visceral skeleton, with the exception of the first visceral arch (the quadrate, pterygoid, palatine and mandible)» consists, in the Chelonia and Lacertilia, of an unpaired portion, the body of the hyoid, corresponding to the basi- branchials of Pish, and two pairs of c o r n u a which represent the hyoid and the first gill-bar respectively ;* in Crocodiles and Snakes only a single pair of horns is present, in the latter group the whole apparatus is very poorly developed. The most impoi-tant bones of the reptilian skull, besides those already mentioned, are the following: the o c c i - pitals, a supra-, basi-, and two ex-ocoipitals, surrounding the foramen magnum; the petrosal, in front of the. 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 Boas, J. E. V. (Johan Erik Vesti), 1855-1935; Boas, J. E. V. (Johan Erik Vesti), 1855-1935. Lehrbuch der Zoologie. London, Sampson Low, Marston
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
