vi CONTENTS 



PHYLUM CHOBDATA continued. 

 Class II. Pisces continued. 



PAGE 



Sub-class II. Holocephali 188 



Sub-class III. Teleostomi 196 



1. Example of the Sub-class Salmofario ..... 198 



2. Distinctive Characters and Classification 217 



Systematic Position of the Example 224 



3. General Organisation 224 



Sub-class V. The Dipnoi 246 



1. Example of the Class Cemtodus (Neoceratodus) fosteri . . 246 



2. Distinctive Characters and Classification . 257 

 Appendix to Pisces The Ostracodermi 261 



Class III. Amphibia 264 



1. Example of the Class Rana temporaries or Rana esculenta . 264 



2. Distinctive Characters and Classification 292 



Systematic Position of the Example 294 



3. General Organisation 294 



Class IV. Reptilia 313 



1. Example of the Class Lacerta 314 



2. Distinctive Characters and Classification 334 



Systematic Position of the Example 337 



3. General Organisation of Recent Reptilia 338 



4. Extinct Groups of Reptiles 371 



Class V. Aves . 378 



1. Example of the Class Columba livia 378 



2. Distinctive Characters and Classification 40S 



Systematic Position of the Example 4J 7 



3. General Organisation 417 



Sub-class I. Archeeoniithes 418 



II. Neornithes . . 420 



