CONTENTS 



VOLUME IV-REPTILES, AMPHIBIANS, AND 



FISHES 



CHAPTER XXXIX 



PAGE 



INTRODUCTION TO THE CLASS OF REPTILES .... 3 

 Orders of Living Reptiles 6 



CHAPTER XL 



ORDER OF CROCODILES AND ALLIGATORS 



CROCODILIA 10 



Synopsis of the Crocodilians . . • 10 



Crocodile Family 11 



American Species of Crocodilians 18 



CHAPTER XLI 



ORDER OF TORTOISES, TERRAPINS, AND TURTLES 



CHELONIA 25 



Synopsis of the Order of Tortoises and Turtles ... 27 



Tortoise Family 28 



v 



