CONTENTS. XV 



Page. 



Order Periosodactyla 498 



Family Tapiridse 498 



Genus Tapirella Palmer 498 



Order Xenarthra 499 



Family Bradypodidse 499 



Genus Bradypus Linnjeiis 499 



Family Cholo^podidee 500 



Genus Cholcepus Illiger 500 



Family Myrmecophagidse 500 



Genus Cyclopes Gray 500 



Genus Tamandua Graj 501 



Genus Myrmecophaga Linnaeus 501 



Family Dasypodidse 502 



Subfamily Dasypodinae 502 



Genus Dasypus Linnaeus 502 



Subfamily Cabassouinse 503 



Genus Cabassous McMurtrie 503 



Order Sirenia 503 



Family Trichechidae 503 



Genus Trichechus Linnaeus 503 



Order Cetacea 504 



Suborder Mysticeti 504 



Family Balaenidae 504 



Genus Eubalaena Gray 504 



Genus Balaena Linnaeus 504 



Family Rhachianectidae 504 



Genus Rhachianectes Cope 504 



Family Balaenopteridae 505 



Subfamily Balaenopterinae 505 



Genus Balaenoptera Lac6p6de 505 



Genus Sibbaldus Gray 506 



Subfamily Megapterinae 506 



Genus Megaptera Gray 506 



Suborder Odontoceti 507 



Family Physeteridae 507 



Genus Physeter Linnaeus 507 



Family Kogiidae 507 



Genus Kogia Gray 507 



Family Delphinidae 507 



Subfamily Delphininae 507 



Genus Prodelphinus Gervais 507 



Genus Steno Gray 508 



Genus Delphinus Linnaeus 508 



Genus Tursiops Gervais 509 



Genus Lissodelphis Gloger 509 



Genus Lagenorhynchus Gray 510 



Genus Orcinus Fitzinger 511 



Genus Grampus Gray 511 



Genus Pseudorca Reinhardt 511 



Genus Globicephala Lesson 512 



Genus Phocaena Cu^der 513 



Genus Phoccenoides Andrews 513 



Subfamily Delphinapterinae 513 



Genus Delphinaptenis Lac^p&de 513 



