51 



CRYPTODIEA. 



CHELONIIDAE. 



Thalassochelys, Fitz. 



Thalassochelys caoiiana, Linn. ; Holbrook, N. Am. Herp., ii, p. 33. En- 

 tire Atlantic coast. 



Eretmochelys, Fitz. 



ErdmocJielys imhricata, Linn. ; Holbrook, N. Am. Herp., ii, p. 39. South- 

 ern Atlantic coast. 



Eretmochelys squamattty Linn.; Agassiz, Cont. Xat, Hist. U. S., i, p. 382. 



Pacific coast. 



Chelonia, r.rong. 



Chelonia mydas, Schw. ; Holbrook, In. Am. Herp., ii, p. 25. Atlantic 

 coast south of Long Island. 



Chelonia virgata, Scliw. ; Agassiz, Cont., i, p. 379. Pacific coast. 



TEIONYCHIDAE. 



Amyda, Agassiz. 



Amyda imitica, Lesueur, Mtm. du Mus. d'Hist. Nat., xv, p. 2G3. jMiddle 

 and northern tributaries of the Mississippi, and the Saint Lawrence. 



ASPIDONECTES, Wagl. 



Aftpidonectes ferox, Schweigger; Holbrook, N. Am. Heri)., ii, p. 11 

 Georgia to Western Louisiana. 



Aspidonectes spinifer, Lesueur, Mem. de 3Ins. d'Bist. Nat., xv, p. 258. 

 Middle and northern tributaries of the Mississippi, and Saint Law- 

 rence. 



As})idonectes aspcr, Agassiz, Cont. Xat. Hist. U. S., i, p. 405. Lower 

 Mississippi tributaries. 



Aspidoncctes niwhalis, Agassiz, Cont. Nat. Hist. U. S., i, p. 40G. Cumber- 

 land and Upper Tennessee Elvers, Tennessee. 



Aspidoncctcfi cmoryi, Agassiz, Cont. Xat. Hist. IT. S., i, p. 407. Texas. 



CHELYDRIDAE. 



Chelydra, Schw. 



Ck'Jydra serpentina, Linn. ; Holbrook, N. Am. Herp., i, p. 139. From 

 Canada to Ecuador. Wanting in the Pacific subregion. 



i 



