61 



20. Mus musculiis. House Mouse. Abundant in the houses, 

 from which -it drives the native vesper mice. 



21. Hesperomys leiicopus, var. sonoriensis Coues' 

 MS. White-footed Mouse. Abundant. 



22. Heotoma cinerea. Wood Eat. " Mountain Hat." 

 Common. 



23. Fiber zibet bicus. Muskrat. Common. ' 



24:. Tlioiiiomys rufcscens. Fort Union Gopher. Com- 

 mon. 



25. Castor fiber. Beaver. Abundant. 



&C 11 UBI.E. 



2O. Tamias laterally. (Spermophilus lateralis Baird.) 

 Say's Striped Squirrel. Said to be common. 



27. Tamias quadrivittatus. Missouri Striped Squirrel. 

 Abundant. 



28. Spermopliiliis Riclrardsoni. Tawny Gopher. 



2O. Eretliizon dorsatus, var. epizantbus. Porcu- 

 pine. Common in the timber. 





30. !Lepiis campestris. Prairie Hare. More or less com- 

 mon everywhere, but exceedingly abundant at certain localities. 



31. tepiis sjlvaticus, var. artemisia. Sage Eabbit. 

 Very numerous every wh ere. 



32. lepus Americanus, var. llairdii. A rabbit which 

 is white in winter occurs in the timber in considerable abundance, 

 and is doubtless the Lepits Bairdii Hayden. 



PART IV. 



On the Mammals of Great Salt Lake Valley, Utah. 



The following notes are based mainly on information kindly commu- 

 nicated to me by Mr. E. D. Mecham, of Ogclen, Utah. Mr. Mecham 

 was formerly an agent of the American Fur Company, and has spent 

 twenty years as a trapper, hunter and guide in the Eocky Mountains. 

 His expeditions have extended from the Saskatchewan on the north 



