. Carnegie Institution of Washington publication. 32 FOSSIL TURTLES OF NORTH AMERICA. groups of turtles combined. Accepting the genera and species as described by Mr. George A. Boulenger in his Catalogue of the Chelonians, there are 30 genera of Cryptodira with 140 species; 21 genera of Pleurodira, with 24 species; 6 genera of Trionychidae,with 24 species. The headquarters of the superfamily is North Fig. II.—Map showing geographical distribution of the Chelydrida;. Portions of the western hemisphere and the island of New Guinea. Fig. 11 shows the distribution of the Chelydridae. The
. Carnegie Institution of Washington publication. 32 FOSSIL TURTLES OF NORTH AMERICA. groups of turtles combined. Accepting the genera and species as described by Mr. George A. Boulenger in his Catalogue of the Chelonians, there are 30 genera of Cryptodira with 140 species; 21 genera of Pleurodira, with 24 species; 6 genera of Trionychidae,with 24 species. The headquarters of the superfamily is North Fig. II.—Map showing geographical distribution of the Chelydrida;. Portions of the western hemisphere and the island of New Guinea. Fig. 11 shows the distribution of the Chelydridae. The northern limits of the family are somewhat uncertain. The same species, Chelydra serpentina, that occurs in Canada, is found also in Ecuador, South America. Until recently it has been supposed that the members of this family are confined to the New World; but }. Douglas Ogilby has reported (Proc. Roy. Soc, Queensland, xix, 1905, p. 11) the discovery of a new genus and species, Devi si a mythodes, in the Fly river, New Guinea, the river that has furnisht likewise the remarkable turtle Carettochelys. The New Guinea snapper has a length of 860 mm., the carapace being 330 mm. long. This distribution of the snappers is even more remarkable than that of the camels and 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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