1908.] NATURAL SCIENCES OF PHILADELPHIA. 113 



CROCODILINI. 



First separated as a distinct order, under this name, by Oppel 

 {Ord. and Fam. Rept., p. 19, 1811). By Linnaeus they were placed in 

 his genus Lacerta. By Laurenti in Gradientia with lizards and tailed 

 amphibians. By most other early authors under "sauriens" or 

 saurii, usually with lizards. "Emydosauriens" was used by Latreille 

 (1801) and Blainville (1816). This w^as Latinized into Emydosauria 

 by Gray (1825). Loricata Merrem (1820) was used twenty-eight years 

 earlier for a subdivision of edentate mammals by Vicq. d'Azyr {Syst. 

 Anat. des Anim., 1792). 



Crooodilus Laur. (Syst. Rept., p. 5.3, 1768). 



Type by tautonomy Crocodilus niloticus Laur. (= Lacerta croco- 

 dilus Linn. part.). 



Alligator Cuvier (Ann. du Musee, X, p. 63, 1807). 



Type by elimination Crocodilus lucius Cuv. (= Crocodilus missis- 

 sippiensis Daudin). 



TESTUDINATA. 



Oppel (Ord. and Fam. Rept., p. 3, 1811). Turtles were placed in the 

 genus Testudo by Linnaeus. They were not mentioned by Laurenti. 

 According to Dr. Stejneger they were named Testudines by Batsch 

 (1788). They were called "cheloniens" by Brongniart, Daudin and 

 Cuvier. Chelonii by Latreille {Hist. Nat. des Salamandres de France, 

 etc., p. xi, 1800) and Dumeril (1806). Cataphracta Link (1807). Dr. 

 Stejneger properly objects to the use of the mere plural of the generic 

 terms Testudo and Chelonia, and accepts Oppel's name rather than 

 resurrect the obscure Cataphracta Link, four years earlier. 



ATHECE. 

 DERMOOHELID^. 

 Dermochelys Blain. (Bull. Soc. Philom., 1816, p. 111). 



This genus was based upon the "tortue a cuir" (= Testudo coriacea 

 Linn.). 



= Sphargis Merrem (1820), same type. 



THECOPHORA. 

 CHELYDRID^. 



Chelydra Schweig. (Prod., p. 23, 1814). 



Monotype TestuAo serpentina Linn. 

 = Chelonura Fleming (1822). Same type. 

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