CONTENTS. 



Order II. Physostomi . 

 Order III. Synentognathi 

 Order IV. Hemibranchii 

 Order V. Lophobranchii 

 Order VI. Acanthopterygii 

 Order VII. Pediculata 

 Order VIII. Plectognathi 



Sub-Class III. Dipnoi 

 Order I. Artiirodira 

 Order II. Slrenoidea . 

 Class II. Amphibia . 



Sub-Class i. Stegocephali . 

 Order I. Lepospondyli 

 Order II. Temnospondyll 

 Order III. Stereospondyli 



Sub-Class II. Urodela 



Order I. Perennibranchiata 

 Order II. Derotremata 

 Order III. Salamandrina 



Sub-Class III. Anura 

 Order I. Aglossa 

 Order II. Arcifei-a 

 Order III. Firmisternia 



Sub-Class IV. Gymnophiona 

 Grade II. Amniota . 



Class I. Sauropsida ... 



Sub-Class I. Reptilia 



Order I. ' Theromorpha 

 Order II. Plesiosauria 

 Order III. Chelonia 

 Order IV. Ichthyosauria 

 Order V. Rliynchocephalia 

 Order VI. Dinosauria . 

 Order VII. Squamata . 

 Order VIII. Crocodilia 

 Order IX. Pterodactylia 



Sub-Class II. Aves 

 Order I. Saururse 

 Order II. OdontormEe . 

 Order III. Odontoholcse 

 Order IV. Eurhipidurae 

 Class II. Mammalia . 



Sub-Class I. Prototheria . 

 Order I. Monotremata 

 Order II. Protodonta . 

 Order III. Multituberculata 



Sub-Class II. Eutheria 

 Legion I. Didelphia 



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