LIST OF A SMALL COLLECTION OF MAMMALS PROCURED 

 BY MR. E. S. THOMPSON IN THE STATES OF MONTANA 

 AND WYOMING. 



FAMILY SCIURID^E. 



1. Sciurus fremonti. 



Sciurus fremonti. Aud. & Bach., N. A. Quad., vol. iii, 1853, 

 p. 237, pi. cxlix, fig. i. 



Two specimens from Eagle Creek, Montana. 



2. Tamias quadrivittatus luteiventris. 



Tamias quadrivittatus luteiventris. Allen, Bull. Am. Mus. 

 Nat. Hist., vol. iii, 1890-91, p. 101. 



Six specimens : 5 from Eagle Creek, Choteau Co., Montana : 

 i from Yansey, Yellowstone National Park. 



3. Tamias minimus. 



Tamias minimus. Bachman, Jour. Acad. Nat. Scien., Phila., 

 vol. viii, 1839, p. 71. 



Tamias quadrivittatus, var pallidus. Allen, Proc. Bost. Soc. 

 Nat. Hist., vol. xvi, 1874, p. 289. 



Tamias asiaticus, var pallidus. Allen, Mon. N. Am. Roden., 

 1877, p. 793- 



Two specimens from Billings, Montana. 



4. Spermophilus armatus. 



Spermophilus armatus. Kennicott, Proc. Acad. Nat. Scien., 

 Phila., 1863, p. 158. 



Three specimens from the Yellowstone National Park, Wy- 

 oming. 



These agree fairly well with Kennicott's description (1. c.), and 

 are recognizable by the gr "y color, and dusky tail. 



FAMILY MURID.E. 

 SUBFAMILY ARVICOLIN^. 



5. Peromyscus leucopus arcticus. 



Hesperomys leucopus arcticus. Mearns, Am. Mus. Nat. Hist., 

 vol. ii, 1887-90, p. 285. 



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