. Journal of anatomy. Fig. 2.—Diagram of the arteiial arches in Sphenodon punctatus. L., laryngeal artery ; M., arteria muscularis cervicis ; S., subclavianartery. Other letters as in .fig. Fig. 3.—Diagram of the arterial arches in Testudo gneca. , common carotid artery ; G., gastric artery ; C, coeliaco-mesenteric artery. Other letters as before. 142 Dr Chas. H. ODonoghue safer to regard the arrangement met with in Sjihrnodon as a primitiveone. In this respect, as far as is known, Sjjheiiodon is more primitivethan any other living reptile. Chelonia. In his exact account of the anatomy
. Journal of anatomy. Fig. 2.—Diagram of the arteiial arches in Sphenodon punctatus. L., laryngeal artery ; M., arteria muscularis cervicis ; S., subclavianartery. Other letters as in .fig. Fig. 3.—Diagram of the arterial arches in Testudo gneca. , common carotid artery ; G., gastric artery ; C, coeliaco-mesenteric artery. Other letters as before. 142 Dr Chas. H. ODonoghue safer to regard the arrangement met with in Sjihrnodon as a primitiveone. In this respect, as far as is known, Sjjheiiodon is more primitivethan any other living reptile. Chelonia. In his exact account of the anatomy of the tortoise, Testudo europcea,Bojanus (10) figures and describes a ductus arteriosus—ductus arteriosusBotalli, as he terras it—on both sides. He does not mention the presenceof a ductus caroticus, and in such a careful, detailed piece of work as thisis, it does not seem probable that he overlooked it. Gegenbaur (23, vol. 385) records the persistence of a small open ductus Botalli on both sidesin Chelydra, but makes no mention of the ductus caroticus. Fritsch(22, p. 701) gives a diagram of the heart and vessels in one of the Schildkroten {Chelydra serpentina ?), in which
Size: 1728px × 1446px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
