Testudo serpentina Linn., 1754, Mus. Ad. Fridr., 36,-1758 

 Syst., 199. 



From Canada southward, east of the Rocky moun- 

 tains. 



MACROCLEMYS Gray, 1855, Cat. Sh. Rept., 48. 

 Chelydra lacertina Schw., 1814, Clielon., 23. 

 Florida to Texas. 



CINOSTERNOIDAE. 



AROMOCHELYS Gray, 1855, Cat. SIi. Rept., 46. 

 Testudo odorata Latr., 1801, Rept., I, 122. 

 Maine to Texas. 



GONIOCHELYS Ag., 1857, Contr., I, 423. 



Aromochelys carinata Gray, 1855, Cat. Sh. Rept., 47. 



Florida to Texas. 

 G. minor Ag., 1857, 1. c., 424. * 



Alabama to Louisiana. 



THYROSTERNUM Ag., 1857, Contr., I, 427. 



Testudo'pennsylvanica Gmel., 1788, Syst. Linn., I, 1042. 



Virginia to Florida. 

 Cinosternum sonoriense LeC, 1854, Pr. Phil. Ac., 184. 



Arizona; Sonora. 

 C. integrum LeC, 1. c, 183. 



Mexico. 

 C. henrici LeC, 1. c, 182. 



Arizona. 

 C. doubledayi Gray, 1844, Cat. Tort., 33. 



California. 

 C. cruentatum Dum., 1851, Cat. Met., 16. 



Mexico ; Texas. 

 K. punctatum Gray, 1855, Cat. Sh. Rept., 45 (s. d.). 



Eastern Florida. 

 K, shavianum Beil., 1825, Zool. Jour., II, 304. 



PLATYTHYRA Ag., 1857, Contr., I, 429. 

 P. flavescens Ag., I. c, 430. 



California: Texas: Utah. 



