IV CONTENTS. 



CHAPTER LXI. 



Orders of Amphibia Ophiomorpha Urodela Anoura Develop- 

 ment of Frog Families of Anoura Labyrinthodontia Distribu- 

 tion of Amphibia in time, ....... 384-392 



CHAPTER LXII. 



General characters of Reptilia Endoskeleton Exoskeleton Diges- 

 tive system Circulatory system Respiratory system, . . 393-397 



CHAPTER LXIII. 



Divisions of Reptilia Chelonia General characters of Chelonian 

 Reptiles Distribution of Chelonia in time Ophidia General 

 characters of Snakes Sub-orders Distribution of Ophidia in 

 time, . 397-407 



CHAPTER LXIV. 



Lacertilia Families of Lacertilia Distribution of Lacertilia in time 

 Crocodilia Sub-orders of Crocodilia - Distribution of Croco- 

 dilia in time, 408-415 



CHAPTER LXV. 



Extinct orders of Reptiles Ichthyopterygia Sauropterygia Ano- 



modontia Pterosauria Dinosauria, 416-422 



CHAPTER LXVI. 



General characters of the class Aves Feathers Vertebral column 

 Skull Pectoral arch and fore-limb Pelvic arch and hind-limb 

 Digestive system Respiratory system Circulatory system 

 Reproductive organs Nervous system and organs of Sense, . 423-441 



CHAPTER LXVI I. 



General divisions of the class Aves Characters and families of the 



order Natatores Characters and families of Grallatores, . 441-450 



CHAPTER LXVI I L 



Characters of Cursores Characters and sections of Rasores Galli- 



nacei Columbacei, ........ 451-456 



CHAPTER LXIX. 



Characters and families of Scansores Characters of Insessores Coni- 



rostres Dentirostres Tenuirostres Fissirostres, . . 457-463 



CHAPTER LXX. 



Characters and sections of Raptores Characters of Saururae, . 464-467 



CHAPTER LXXI. 

 Distribution of Aves in time, ....... 467-470 



