CONTENTS 



XI 



ANIMALS {Coiitmued) : page 



General survey of class 112 



Order 1, Graptolithida 113 



Type of order, Diplograptiis foliaceus .... 113 



General survey of order 115 



Fossil examples . 117 



Class B, Scyphozoa 121 



Class C, Anthozoa 122 



Type of class, AsU'angia dance ...... 122 



General survey and classification of class .■ . . . 128 



Fossil examples ■ 131 



Class D, Ctenophora 139 



Phylum IV, Platyhelminthes 



140 



Phylum V, Nemathelminthes 



140 



Phylum VI, Trochelminthes 



141 



Phylum VII, Annulata .... 141 



Class A, Archi-annelida 142 



Class B, Hirudines 142 



Class C, Gephyrea 142 



Class D, Chstopoda . 142 



Type of class, Nereis virens ....... 142 



Summary of Chaetopoda 146 



Fossil examples ......... 146 



Phylum VIII, Echinodermata 



General survey and classification 



Type of phylum, Asterias forbesi 

 Class A, Cystoidea 



General survey of class . 



Type of class, Caryocrimis 



Fossil example 

 Class B, Blastoidea 



General survey of class . 



Type of class, Fentre?nites 



148 



148 

 149 

 154 

 154 

 155 

 156 

 157 

 157 

 157 



