V 



Vol. Ill] CKINNBLL— MAMMALS OF CALIFORNIA 267 



The "range" of each species is given brielly, but as accurately 

 as our present state of zoogeographical knowledge makes pos- 

 sible. In the case of land manmials, ranges are stated, wher- 

 ever practical)le, in terms of life-zones antl faunal areas. Exact 

 localities arc nanicil only where they are believed to mark 

 points somewhere near tiie extreme limits of distribution. Au- 

 thorities for the information included in the statement of range 

 arc always given whenever precise data of any sort are avail- 

 able. In all cases where the abbreviation "Mus. Vert. Zool." 

 appears, specimens indicating the stated range, either entirely 

 or in part, are containctl in the California Museum of Verte- 

 brate Zoology. 



The accompanying map of the life-zones of the state has been 

 compiled primarily from data on file in the California Museum 

 of Vertebrate Zoology. Use has been made also of informa- 

 tion from many published botanical papers. Professor Harvey 

 M. Hall of the University of California has kindly made a 

 number of corrections based upon his knowledge of plant- 

 distribution in the state. It is almost superfluous to state here 

 that the employment of the life-zone concept in defining ranges 

 of animals as well as of plants, owes its beginning to the re- 

 searches of the foremost mammalogist of America, C. Hart 

 Merriam. It is a matter of credit to him that the farther we. 

 carry our studies in distribution, the more they align them- 

 selves in support of the laws formulated by him. 



The map of the faunal districts of the state is offered not at 

 all as a final exposition of this order of distributional be- 

 havior, but as a help in designating the ranges of the mammals. 

 The boundaries as given are of course merely approximate ; 

 and even the areas themselves, as here outlined, will doubtless 

 receive extensive modification on the basis of further geo- 

 graphical study. 



The present list was concluded to date, in August, 1912. 

 Since then appeared Gerrit S. Miller's important List of North 

 American Laud Maiuiiials in the United States National 

 Museum, ipii (published December 31, 1912). The writer 

 thereupon changed the order in the California list to accord 

 with Miller's, and also made a numlacr of changes in generic 

 and family names in accordance with some of the decisions of 

 the same authority. 



