XII U. S. NATIONAL MUSEUM BULLETIN 205 



to their establishment as members of the North American fauna; (c) reference 

 to True's list, but with the many species which prove to have been composite, as 

 understood in 1884, no attempt is made to apportion the name then used to each 

 of the component parts as they now stand; and (d) references to changes of 

 such names as are now different from those used by True. References to altera- 

 tions in generic names are also given, but the concordance with the nomenclature 

 of 1884, being indicated by the citations under species, is here omitted. The 

 type locality of each form is stated with all possible exactitude, and in revised 

 genera the ranges are given, so far as practicable, in the words of the author 

 of the revision. 



All questions of nomenclature have been decided as nearly as possible in 

 accordance with the International Zoological Code. 



In the preparation of this bulletin assistance has been received from members 

 of the Section of Distribution of Birds and Mammals, Fish and Wildlife Service, 

 particularly Miss Viola S. Schantz, who has verified the presence of listed forms 

 in that collection; from Dr. David H. Johnson, Dr. Henry W. Setzer, and Charles 

 O. Handley, Jr., of the Division of Mammals, United States National Museum; 

 and from Dr. E. Raymond Hall, Director, Museum of Natural History, University 

 of Kansas. 



