. The Cambridge natural history. Zoology. SKELETON 31S remarkable to a purely neural attachment. In all the Chelonia the ribs are devoid of the tubercular portion. The cervical vertebrae have no ribs, except mere traces in the shape of small nodules. On the tail the ribs are often large, and, when fused with their neural supports, look like transverse processes; the whole arrangement exactly resembles that of Crocodilia. The first pair of thoracic ribs, those borne by the. Fie. 61.—Various plastra and their horny shields. 1, Testudo ibera ; 2, Macrodmmnys temmindd; 3, Cinosternum odoratum; i,
. The Cambridge natural history. Zoology. SKELETON 31S remarkable to a purely neural attachment. In all the Chelonia the ribs are devoid of the tubercular portion. The cervical vertebrae have no ribs, except mere traces in the shape of small nodules. On the tail the ribs are often large, and, when fused with their neural supports, look like transverse processes; the whole arrangement exactly resembles that of Crocodilia. The first pair of thoracic ribs, those borne by the. Fie. 61.—Various plastra and their horny shields. 1, Testudo ibera ; 2, Macrodmmnys temmindd; 3, Cinosternum odoratum; i, Sternothaerus nigricans; 5, Ohelodina loncjicoUis ; 6, Ghelone mydas. a or an. Anal shield ; ahd, abdominal shield ; / or fern, femoral; g or giil, gular, unpaired in Pig. 3 ; Ti or hmn, humeral shield ; i or , intergular ; im, infra-marginals ; m, marginals ; p orperA, pectoral; x, in Fig. 1, inguinal shield constituting, with the axillary xx, the last trace of infra- marginals. ninth vertebra, are peculiar. They arise from the anterior portion of the centrum, are much reduced, sometimes to mere threads of bone, and lean against the anterior rim of the second pair of ribs, in many cases without reaching the carapace. The next following ribs, those of the tenth to the sixteenth vertebra, are intimately involved in the formation of the first to seventh costal plates. The ribs of the two sacral vertebrae sometimes remain quite distinct throughout life, just touching the upper. 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
