CONTENTS. 



PA3E 



I. INTRODUCTION vii 



Objects '. ". . -,'- . vii 



Status of Ichthyology . .... viii 



Classification ............ viii 



Classes (Pisces, Marsipobranchii, Leptocardii) . . . . . viii 



Sub-Classes of Pisces ix 



Orders of Pisces xi 



Characteristics and sequences of Primary Groups xix 



Leptocardians xix 



Marsipobranchiates ........... xix 



Pisces xx 



Elasmobranchiates xx 



Ganoidei xxii 



Teleost series ... xxxvi 



Genetic relations and Sequences . . . . . . . . xiii 



Excursus on the Shoulder Girdle of Fishes xiii 



Excursus on the Pectoral Limb . . . . . . . . xxviii 



On the terms "High" and "Low" xxxiii 



Families xliv 



Acknowledgments xlv 



II. FAMILIES OF FISHES (including references to Introduction). 



Class Pisces (1-240) xx 



Series Teleostomi s. Branchiata (1-214) 1 



Sub-Class Teleostei (1-207) xxxvi 1 



Order Plectognathi (1-6) xl 1 



Sub-Order Gymnodontes (1-3) ..... 1 



Sub-Order Ostracodermi (4) 1 



Sub-Order Sclerodermi (5-6) 1 



Order Lophobranchii (7-9) xxxix ..... 2 



Sub-Order Syngnathi (7-B) 2 



Sub-Order Solenostomi (9) 2 



Order Pediculati (10-13) xli 2 



Order Hemibranchii (133-138) xxxix .... 13 



Order TeleocepJiali (14-180) xxxvi 2 



Sub-Order Heterosomata (14-15) .... 2 



Sub-Order Anacanthini s. Jugulares (17-30) . . 3 



Sub-Order Acanthopteri (31-129) .... 4 



Sub-Order Percesoces (130-132) 13 



Sub-Order Synentoguathi (139-140) .... 14 



(v) 



