. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOMY OF VERTEBRATES. 49 genus called Pleurodeles. In the land Salamander the backbone is strengthened by the ball-and-socket articulation of the trunk- vertebra;. Cuvier notices a curious inconstancy in the place of attachment of the jjclvic arch, sometimes to the fifteenth, some- times to the sixteenth, and in one instance sus- l^ended by the right pier to the sixteenth, by the left to the seventeenth, vertebra, in Salainun- dra atra.^ The oj)hiomorphous batrachia are remark- able for the multiplicity, the theriomorp
. On the anatomy of vertebrates. Vertebrates; Anatomy, Comparative; 1866. ANATOMY OF VERTEBRATES. 49 genus called Pleurodeles. In the land Salamander the backbone is strengthened by the ball-and-socket articulation of the trunk- vertebra;. Cuvier notices a curious inconstancy in the place of attachment of the jjclvic arch, sometimes to the fifteenth, some- times to the sixteenth, and in one instance sus- l^ended by the right pier to the sixteenth, by the left to the seventeenth, vertebra, in Salainun- dra atra.^ The oj)hiomorphous batrachia are remark- able for the multiplicity, the theriomorphous for the paucity, of distinct vertebra; in the trunk ; these latter have tlie ball-and-socket articula- tion. The frog, fig. 44, A, has nine vertel^rin and the coccygeal style c ; but by coalescence of this with the sacrum, and of the atlas with the second vertebra, in the Surinam toad (^^pa), the number of distinct triuik- segments is in that species reduced to seven. In Rana boans the atlas has no diapophy- ses; but they are present and 01 great iengtn m skeleton of Iroe, a ; Tertelira B ana cru-pu3 c o£ toad. the succeeding vertebras to the sacrum inclusive, where they are thick and support by their truncate ends two long rib-like bones, ib. A, 62, which expand at their distal ends, and unite there to two partially anchylosed bony plates, 64, which complete the haemal arch of the ninth segment of the trunk. The superior developement of this arch relates to the great size and strength of its appendages — ' CLi. torn. V. pt. ii. p. 413. E. 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, 1804-1892; Cornell University. College of Veterinary Medicine. Flower-Sprecher Veterinary Library. fmo. London, Longmans, Green
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