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PREFACE. 



The present List contains all the named forms of North Ameri- 

 can mammals on land or in the adjacent seas described up to this 

 date, that, under the most lenient treatment, are entitled to any con- 

 sideration. The various forms that were included in the Appendix 

 to the "Synopsis of North American Mammals" have been placed in 

 their proper positions. 



Five species that were omitted from that work, and such forms 

 as have been named since it passed through the press, have been 

 added with their descriptions, and will be found under their respec- 

 tive genera. 



A few changes in genera and species, affected by the rule of 

 priority, have been made, and typographical errors in names, which, 

 in spite of every care have appeared in the "Synopsis," have been 

 corrected, and the spelling in this List should be adopted whenever 

 differing from that in the book just mentioned. This publication, 

 therefore, may serve as a Check List of our Mammals, as a guide for 

 labeling specimens, and as a Supplement to the " Synopsis," to be 

 bound with it, and bringing it to date. 



The pagination given is that of the " Synopsis." 



Especial thanks are due to Dr. F. W. True of the U. S. Nat. 

 Museum, Washington, for photographs of the skulls of Kogia brevi- 

 ceps and Berardius bairdi in the National collection, from which the 

 plates accompanying this publication were taken. 



D. G. E. 

 June 10, 1901. 



