xvi CONTENTS. 



CHAPTER LI. 



General characters of Fishes Integumentary system Osseous system 

 Fins Respiration Circulation Digestive system Swim- 

 bladder Nervous system Olfactory organs Reproduction, 461-476 



CHAPTER LIT. 



Pharyngobranchii Marsipobranchii, . . . . . 477-482 



CHAPTER LIII. 



Teleostei Sub -orders Malacopteri Anacanthini Acanthopteri 



Plectognathi Lophobranchii, 482-488 



CHAPTER LIV. 



Ganoidei Sub-orders Lepidoganoidei Placoganoidei, . . 489-494 



CHAPTER LV. 



Elasmobranchii and Dipnoi Sub-orders of Elasmobranchii Holo- 



cephali Plagiostomi Dipnoi, . . ./'- . ,, ' . 494-503 



CHAPTER LVI. 

 Distribution of Fishes in time Literature, .... 504-508 



CHAPTER LVII. 

 General characters of the Amphibia, '<i*H 59"5 I 3 



CHAPTER LVIII. 



Orders of Amphibia Ophiomorpha Urodela Anoura Develop- 

 ment of Frog Families of Anoura Labyrinthodontia Distri- 

 bution of Amphibia in time Literature, . . . . 513-525 



CHAPTER LIX. 



General characters of Reptilia Endoskeleton Exoskeleton Diges- 

 tive system Circulatory system Respiratory system, . 526-530 



CHAPTER LX. 



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, . 530-545 



CHAPTER LXI. 



Lacertilia Families of Lacertilia Distribution of Lacertilia in time 

 Crocodilia Sub-orders of Crocodilia Distribution of Croco- 

 dilia in time, .... **.^ . . . . 545-558 



CHAPTER LXII. 



Extinct orders of Reptiles Ichthyopterygia Sauropterygia Ano- 

 modontia Pterosauria Dinosauria Theriodontia Litera- 

 ture, .......... 559-570 



