448 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



* Shell more tliau twice as long as high ; head rounded in front ; margin 

 of jaws straight; fore-legs broadest at the extremity. 



Anterior part of the plastron bent upward. Distance from base of 

 1st claw^ to base of 4th claw, hind foot, equal to distance from 



base of 1st claw to base of 3d claw, fore foot X. polyphemus. 



Plastron level in the anteroposterior direction. Distance from 



base of 1st claw to base of 4th claw, hind foot, equal to distance 



from base of 1st claw to base of 4th claw, fore foot. .X. Agassizii. 



** Shell less than twice as long as high; head wedge-shaped in front; 



margin of jaws curved; fore-legs broadest at the knee. .X. Berlandieri. 



BIBLIOGRAPHY. * 



1734-1765. Seba, Albert. Locupletissimi rerum naturalmm thesauri acciirata de- 

 scriptio et icouibus artiticiosissimus expressio, per iiniversam physices his- 

 toriam. Amsterdam, 1734-1765, I, pi. 80, fig. 1. (Testudo terrestris major 

 americana.) 



1791. Bartram, William. Travels through North and South Carolina, Georgia, 

 East and West Florida. Philadelphia, 1791 (London, 1794), pp. 182, 183. 8°. 

 (Gopher.) 



1803. Daudin, F. M. Histoire Naturelle des Reptiles, II, 1803 (An X), pp. 256-259. 

 Paris. 8°. (Testudo polyphemus.) 



1803. Bosc. Nouvelle Dictionnaire d'Histoire Naturelle, XXII, 1803, p. 256. Paris. 

 8°. (Testudo polyphemus.) 



1812. ScHWEiGGER, A. F. Prodrouius Monographiaj Cheloniorum. Konigberger 

 Archiv, I, 1812, pp. 317 and 442. (Emys polyphemus. ) 



1821. Forbes, J. G. Sketches, historical and topogi-aphical, of the Floridas ; par- 

 ticularly of East Florida, 1821, p. 172. 8°. New York. (GoulTre.) 



1825. S.\Y, Thos. Journal Acad. Nat. Sci. Philadelphia, IV, pt. ii, 1825, pp. 207-208. 

 (Testudo polyphemus.) 



1829. Harlan, R. Journal Acad. Nat. Sci. Philadelphia, VI, pt. i, 1829, pp. 21-22. 



(Testudo polyphemus.) 



1830. Bonaparte, C. L. Osservazioni suUa Seconda Edizione del Regno Animals del 



Barone Cuvier, 1830, p. 1.52. Bologna, 8°. (Testudo polyphemus.) 



1831. Gray, J. E. Synopsis Reptilium, pt. i, 1831, p. 11. London. 8'^. (Testudo 



polyphemus.) 



18.35. Dumeril, a. M. C. & Bibron, G. Erp^tologie G^n^rale, II, 1835, pp. 102-108. 

 (Testudo polyphemus.) 



1828-1836. Le Conte, John. Annals Lyceum Nat. Hist., New York, III, 1828-1836, 

 pp. 97-100. (Testudo Carolina.) 



1836. HoLBROOK, J. E. North American Herpetology, Ist ed., I, 1836, pp. 41-46, pi. 

 I. Philadelphia. 4'^. (Testudo polyphemus.) 



1842. , . 2d edition, I, 1842, pp. 25-30, pi. i. Philadelphia. 4°. 



1844. Gray, J. E. Catalogue of Tortoises, Crocodiles, and Amphisbeans in the col- 

 lection of the British Museum, 1844, pp. 4, 5. Loudon. 12°. (Gopher or 

 Mungofa. ) 



1850. Chateaubriand, Le Vicomte de. Voyage en Am^rique. Edition of 1850, pp. 



336,337. Paris. 12°. [Also in earlier editions.] 



1851. DuMliRiL, M. C. & M. A. Museum d'Hist. Nat. de Paris. Catalogue M^th- 



odique de la Collection des Reptiles, 1851, p. 5. Paris. 8°. (Tortue poly- 

 pheme.) 

 1855. Gray, J. E. Catalogue of Shield Reptiles in the Collection of the British Mu- 

 seum, Part I, 185.5, p. 5. London. 4°. (Testudo gopher.) 



