580 



THE BOX TORTOISES OF NORTH AMERICA— TAYLOR, volxvii. 



1889. — Cistudo Carolina Tar. mexicana, Boulenger, Catalogue of Cheloniaus in tlie 



Britisli Museum, p. 118. 

 1891. — Terr apene mexicana, Baur., Science, xvii, 1891, p. 191; Amer. Natural , 1893, p 



677. 



Quadrato-jugal very rudimentary; connected with the quadrate and 

 rather elongated. Zygomatic arch absent. Upper branch of the scap 

 ula as in T. major. No webs between the digits and only three claws 

 on the hind foot. Number of phalanges in the forefoot 2-3-3-2-2; in 

 hind foot 2-3-3-3-1. Maxilla not notched. 



Carapace oval in horizontal outline; rather triangular in transverse 

 outline. Eatio of width to length in adults approximately 10 to 13. 

 The additional plate found between the fourth and fifth vertebral jjlates 

 seems to be characteristic. First pleural plate more than three times 

 as long as wide. 



Color of the carapace brownish yellow marked by dark brown radiat- 

 ing lines and irregular spots. Head yellow, irregularly marked by 

 black or dark brown. Throat yellow, posterior neck light brown. 



Plastron curved in the region of the abdominal and femoral plates, 

 and distinctly mucronate posteriorly. Color, whitish yellow, the pos- 

 terior border of each dermal plate bordered with smoky brown. 



City of Mexico and Tampico, Mexico. 



List of specimens. 



TERRAPEXE TRI UNGUIS (Agassiz). 



1831. — ? Emys kinosiernoides, Gray, in Griffith's Animal Kingdom, ix, Append., p. 



12; Synopsis Reptilium, 1831, p. 32. 

 1835. — Emys cinosternoides, Dumeril et Bibron, Erpctologie General, ii, p. 303; ix, 



1854, p. 227. Dumeril Museum d'Histoire Naturelle, Catalogue Mc'thod- 



i(iue de la Collection des Rcittiles, 1851, p. 12. 

 1844. — Emys (Emyoides) kinosternoides, Gray, Catalogue of Tortoises in the British 



Museum, p. 27. 

 1857. — Cistudo Iriunguis, Agassiz, Contributions to the Natural History of the United 



States, I, p. 445, PI. vii (type in Mus. Comp. ZooL, Cambridge, Mass.; 



locality of type, Louisiana). — Garman, Bull. Essex lust., xvi, 1884, p. 10. 

 1865. — Terrapene carinaia (part), Strauch, Mem. Acad. Sci. St. Petersb., (7) viii, 



No. 13, p. 45. 

 1875. — Cistudo clausa subsp. triitrupiis, Cope, Bull. U. S. Nat. Mus., 1, p. 53. 

 1883. — Cistudo Carolina Iriunguis, True in Yarrow, Bull. U. S. Nat. Mus. 24, p. 37. 

 1889.— Cistudo Carolina var. cinosternoides, Boulengep, Catalogue of Chelonians in 



the British Museum, p. 117. 

 1890.— Cistudo Carolina (part), Strauch, Mem. Acad. Sci., St. Petersb., (7) xxxviii, 



2, p. 62. 

 1891.— Terrapene cinosternoides, Baur, Science, xvii, 1891, p. 191. 

 1893. — Terrapene iriunguis, Baur, \mer. Natural., 1893, p. 677. 



