TABLE OF CONTENTS. 



Pages. 



Family CASTORHLE 427-456 



Genus Castor 432-451 



Castor fiter 433-451 



Synonymy 433-434 



Description 434-436 



Relation of the American and Old World Beavers 437-445 



Remarks on synonymy and nomenclature - 444-445 



Geographical distribution 445-446 



Fossil remains 446-446 



Measurements of skulls 447-447 



List of specimens examined 448—149 



Genus Eucastou 449-440 



Eucastor tortus 449-451 



Genus Steneofiber 451-451 



Steneofiber nebrascensis 451-453 



Steneofiber pansus 453-453 



Bibliographical appendix 454-454 



429 



