TABLE OF CONTENTS. 



Page. 



Title I 



Prefatory note HI 



Letter of transmittal V 



Table of contents Vll 



List of illustrations Xm 



Characters of the Pinnipedia 1 



Family ODOB^NID^ Walruses 6-186 



Synonymy 5 



General observations and characters of the group 5-12 



Genera 12-14 



Synopsis of the genera 14 



Genus ODOBiENUS 14 



Synonymy and history 14-17 



Species 17-23 



Odob^nus rosmarus Atlantic "Walrus 23-147 



Synonymy and bibliographical references 23-26 



External characters 26-38 



Sexual differences 38-43 



Individual variations and variations dependent upon age 43-45 



Measurements of skulls 46 



Dentition 47-57 



Fossil remains 57-65 



Geographical distribution, present and past 65-79 



Coast of North America '. 65-71 



Coast of Europe 71-79 



Nomenclature 80 



Etymology 80-82 



Literature 82-107 



General history 82-92 



Figures 92-107 



Habits and the chase 107-133 



Products 133-134 



Food 134-137 



Functions of the tusks 137-138 



Enemies 138-139 



Domestication 140-147 



ODOBiENUS OBESUS Pacific "Wall-US 147-186 



Synonymy and bibliographical references 147 



External characters and skeleton 147-155 



Measurements of skeleton 149-150 



Measurements of skulls 155 



Differential characters 156-170 



Nomenclature 170-171 



General history 171-172 



Figures : 172-174 



Geographical distribution 174-178 



Habits, food, commercial products, and the chase 178-186 



Family OTARIID^ Eared Seals 187-411 



Synonymy and characters of the group 187 



Technical history 188-207 



Higher groups 188-190 



Genera 190-193 



Species 193-207 



IX 



