CONTENTS. 



The Lophiodon . 

 The Anoplotherium 

 The Dinotheriura . 

 Fossil Skull of Toxodon 



Page 

 100 

 102 

 104 

 111 



Tribe— AQUATIC PACHYDERMATA. 



The Dugong ....... 132 



The Manat(?e, or Lamantin . . . . .133 



Zeuglodon ........ 135 



Order— CETACEA. 



Family— DELPHINID^. 



The Common Porpoise . 

 The Narwhal 

 The Beluga 



Family— CATODONTID^. 

 The Common Cachalot, or Spermaceti Whale 



Family— BALiENIDiE. 



The Greenland Whale, or Great Mysticete 

 The Rorqual 



Family—PHOCID^. 



The Common Seal 

 The Harp-Seal . 

 The Sea-Leopard . 

 The Crested Seal . 

 The Elephant-Seal 

 The Ursine Seal . 

 Forster's Sea-Lion 

 The Walrus, or Morse 



141 

 144 



149 



151 



162 

 168 



174 

 180 

 182 

 184 

 187 

 192 

 195 

 199 



