CONTENTS. 



I. Introduction 



Objects ........ 



Status of Ichthyology ...... 



Classification ....... 



Classes (Pisces, Marsipobranchii, Leptocardii) 



Sub-Classes of Pisces ..... 



Orders of Pisces ...... 



Characteristics and sequences of Primary Groups 



Leptocardians ...... 



Marsipobranchiates ..... 



Pisces 



Elasmobranchiates ..... 



Ganoidei ....... 



Teleost series ...... 



Genetic relations and Sequences 

 Excursus on the Shoulder Girdle of Fishes 

 Excursus on the Pectoral Limb . 

 On the terms "High" and "Low" 



Families 



Acknowledgments ..... 



II. Families of Fishes (including references to Introduction 



Class Pisces (1-240) 



Series Teleostomi s. Branchiata (1-214) . 

 Sub-Class Teleostei (1-207) xxxvi . 

 Order Plectognathi (1-6) xl 



Sub-Order Gymnodontes (1-3) 

 Sub-Order Ostracodermi (4) 

 Sub-Order Sclerodermi (5-6) 

 Order Lopliobranchii (7-9) xxxix 

 Sub-Order Syngnathi (7-8) 

 Sub-Order Solenostomi (9) . 

 Order Pediculati (10-13) xli 

 Order Hemibranchii (133-138) xxxix 

 Order Teleocephili (14-180) xxxvi 

 Sub-Order Heterosomata (14-15) 

 Sub-Order Anacanthini s. Jngulares (17-30) 

 Sub-Order Acanthopteri (31-129) 

 Sub-Order Percesoces (130-132) . 

 Sub-Order Synentoguathi (139-140) 



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