UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 7, No. 7, pp. 205-307 June 24, 1911 



MAMMALS OF THE ALEXANDER NEVADA 

 EXPEDITION OF 1909 



BY 



WALTER P. TAYLOR. 



(Contribution from the Museum of Vertebrate Zoology of the University of California') 



CONTENTS. 



PAGE 



Introduction 205 



Check List of Species 208 



General Accounts : 208 



ISIew Species Described : 



Microtus intermedius 253 



Literature Cited 304 



INTRODUCTION. 



The material upon which the present report is based was col- 

 lected during the months from May to August, inclusive, 1909, 

 in northern Humboldt County, Nevada. The accomplishment 

 of this work was made possible through means provided by ]\Iiss 

 Annie Isl. Alexander. All of the specimens and notes resulting 

 have been added by her to the collections of the Museum of Ver- 

 tebrate Zoolog}^ of the ITniversity of California. 



The regular collectors in the field were Charles H. Richardson, 

 Jr., and the writer. ]\Iiss Louise Kellogg and Miss Alexander 

 herself, who were members of a party carrying on palaeontologi- 



1 This is tlie fifth pajjer based primarily on the results of the ]9(l9 

 .-\le.xander Expedition to Nevada. (See Univ. Calif. Publ. Zool., vol. 5, 

 pp. 275-281, 283-302, and 311-316, and vol. 7, pp. 173-177.) 



