13. CISTUDO. 



115 



Neural plates raostlj' hexagonal, short sided in front, the ciji;litli 

 absent, the corresponding costals meeting on tho median line. 

 Plastron divided into two movable lobes separated from each other 

 and from the carapace by ligament ; entoplastron intersected by the 

 humero-pectoral suture. No bony temporal arch ; alveolar surface 

 ■without median ridge ; choana) between the eyes. Upper surface of 

 head covered with undivided skin. Digits almost free, or with a 

 very short web. Tail short. 



North America. 



Fig. 32. 



Skull of Cistudo Carolina. (From Gray, P. Z. S. 1869. 



1. Cistudo Carolina. 



Edwards, Nat. Hisf. iv. pi. ccv. (17o0); Block, Schrift. Ges. Naturf. 



Fr. Berl. vii. p. 131, pi. i. (1767). 

 Testudo Carolina, Linn. S. N. i. p. 352 (176G) ; Baud. Itept. ii. p. 207 



(1802). 



eariuata, Linn. I. c. p. 353. 



clausa, Gmel. S. N. i. p. 1042 (1789) ; Schocpff, Test. p. 32, pi. vii. 



(1792) ; Daud. I. c. p. 207, pi. xxiii. fig-s. 1 & 2 ; Leconte, Ann. Lye. 



N. Y. iii. p. 121 (1830). 



virgulata, Daud. I. c. p. 201, pi. xxiii. figs. 3 & 4. 



Emys clausa, Schiveigg. Prodr. p. 46 (1814) 



virgulata, Schweif/ff. I. c. p. 47. 



schneideri, Sclnoeiyg. I. c. p. 48. 



Terrapene clausa, Men: Tent. p. 28 (1820) ; Bell, Te<t. (1836). 

 Cistudo clausa, Say, Journ. Ac. Philad. iv. p. 214 (1825). 

 Terrapene Carolina, Bell, Zuol. Journ. ii. p. 300 (1825). 



maculata, Bell, I. c. 



? Terrapene nebulosa, Bell, I. c. p. 310. 



Cistudo Carolina, Gray, Sijn. Rapt. p. 18 (1831); Du7n. S; Bibr. ii. 



p. 210 (1835) ; Holbr. N. Am. Herp. i. p. 31, pi. ii. (1842) ; Gray, 



Cat. Tort. p. 30 (1844), and Sh. Sept. i. p. 39 (1855) ; Wied, JV. Act. 



Ac. Leop.-Carol. xxxii. i. p. 1, pi. i. fig. 1 (1865) ; Gray, SujtjjI. Cat. 



Sh. Rept. i. p. 19 (1870). 



