TABLE OF CONTENTS. 



Page. 



Introductory remarks 3 



Part I. Arrangement of the families and higher divisions of Batrachia and 



Reptilia. [Adopted provisionally by the Smithsonian Institution.].. 7 



Class Batrachia 7 



Order Anura 7 



Stegocephali 10 



Gymnophidia 11 



U rodela 11 



Proteida 12 



Trachystomata 12 



Class Eeptilia 12 



Order Ornithosauria - 12 



Dinosauria 13 



Crocodilia 14 



Sauropterygia 14 



Anomodontia l'^> 



Ichthyopterygia 15 



Ehy nchocephalia 15 



Testudinata 16 



Lacertilia 17 



Pythonomorpha 20 



Ophidia 21 



Part II. Check-list of the species of Batrachia and Eeptilia of the Nearctic or 



North American realm 24 



Class Batrachia 24 



Order Trachystomata 24 



Proteida 24 



Caducibranchiata 25 



Annra 29 



Bnfoniform ia 29 



Firmisternia 30 



Arcifera 30 



Eaniformia 32 



Class Eeptila 33 



Order Ophidia 33 



Solenoglypha 33 



Proteroglypha 34 



Asinea 34 



Scolecophidia 44 



