CONTENTS vii 



CHAPTER IV 

 STRUCTURE AND CLASSIFICATION OF REPTILES (REPTILIA) 



Page 



Structure and Development of the Sand- Lizard (Lacerta agilis), taken as a Type - 191 



CLASSIFICATION OF LIVING REPTILES (Reptilia) 



Order i. CROCODILES and ALLIGATORS (Crocodilia) 204 



Order 2. TOOTHLES3 REPTILES (Chelonia) - - -212 



Structure and Development of the Grecian Tortoise (Testudo Graeca), taken as 



a Type Turtles and Tortoises 212 



Order 3. LIZARDS (Lacertilia) - - - - - - - -.- - 221 



Order 4. SNAKES (Ophidia) 227 



Peculiarities of Structure Non-poisonous and Poisonous Snakes - - 227 



Order 5. TUATARAS (Rhynchocephala) - - - 236 



CHAPTER V 



STRUCTURE AND CLASSIFICATION OF AMPHIBIANS (AMPHIBIA) 



Structure of the Spotted Salamander (Salamandra maculosa), taken as a Type - 238 



Order i. TAILED AMPHIBIANS (Urodela) Salamanders, Newts - - - - 245 



Order 2. TAILLESS AMPHIBIANS (Anura) ... .... 249 



Structure and Development of the Grass Frog (Rana temporaria), taken as a 



Type Frogs and Toads 249 



Order 3. LIMBLESS AMPHIBIANS (Gymnophiona) Caecilians - - - - 255 



