. Carnegie Institution of Washington publication. 25^ FOSSIL TURTLES OF NORTH AMERICA. downward; whereas, the border of the second peripheral is turned upward. It is probable that the bone is an intrusion from another species. The sulci of the plastron are wholly effaced. On the costals they are narrow, but distinct. As seen from plate 37, fig. 7, the sulci limiting the vertebral scutes laterally are not far removed from the costo-neural sutures. The first vertebral was evidently wider than those succeeding it. If the neurals had the relative width that they have in Adocus punctatus, the third


. Carnegie Institution of Washington publication. 25^ FOSSIL TURTLES OF NORTH AMERICA. downward; whereas, the border of the second peripheral is turned upward. It is probable that the bone is an intrusion from another species. The sulci of the plastron are wholly effaced. On the costals they are narrow, but distinct. As seen from plate 37, fig. 7, the sulci limiting the vertebral scutes laterally are not far removed from the costo-neural sutures. The first vertebral was evidently wider than those succeeding it. If the neurals had the relative width that they have in Adocus punctatus, the third vertebral must have been 52 mm. wide. On the second and thud peripherals the longitudinal sulci lie not far above the free border of the carapace. The sulci on the supposed eighth and ninth peripherals are so obscure that they can not be traced. Agomphus tardus Wieland. Text-figs. 514-318. Agomphus tardus, Wieland, Amer. Jour. Sci. (4), XX, 1905, p. 430, figs. 1-7. This species was found in the Cretaceous marl pits at Birmingham, Burlington County, New Jersey, in 1869. The type forms number 77-4 of the Marsh collection at Yale University. The parts recovered are most of the nuchal, the second and the fifth neurals, the first and second left costals; fragments of the third and fifth, and the whole of the eighth right costals; of the right peripherals, the first, eighth, ninth, and tenth; of the left side the fifth, sixth, tenth, and the eleventh; the left hyoplastron, and the right hypoplastron. These parts have enabled. 3H-. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington


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