TABLE OF CONTENTS 



An asterisk signifies that the group is extinct. 



PAGE 



THE CHORDATA .... 1 

 Phylum CEPHALOCHORDA . 10 



Sub-class Teleostei — contd. 



Sub-order 3. Symbranchii 



Phylttji VERTEBRATA 



45 



Class I. PISCES .... 51 

 Sub-class 1. Marsipobbanchii 95 



2. ELASMOBRANCHn 118 



Order 1. Pleiiropterygii* 



„ 2. Acanthodii* 



„ 3. Ichthyotomi* . 



„ 4. Selachii (Plagio 

 stomi) 



Sub-order 1. Notidani . 



,, 2. Squali 



3. Baji. . . 



Order 5. Hoiocephali 



Sub-class 3. Ganoidei 

 Order 1. Chondrostei 

 Order 2. Crossopterygii . 

 Sub-order 1. Ostcolepida* 

 ,, 2. Cladistia . 

 Order 3. Lepidostei . . 

 „ 4. Amioidei 



Sub-class 4. Teleostei . 

 Sub-order 1. Malacopterygi 



145 

 146 

 147 



148 

 149 

 150 

 153 

 155 



159 

 167 

 171 

 175 

 176 

 176 

 180 



183 



213 



( Salmon iclupci- 

 formcs) 



OMnriophysi 

 { Cyprinisiluri- 

 f amies) . .216 



