•252 microtus. fiber. 



Guatemalan Meadow Vole. 



Type locality. Todos Santos, Huehuetenango, Guatemala. Alti- 

 tude, 10,000 feet. 



Geogr. Distr. Known only from the type locality. 



Subgenus I. Neofiber. 

 613. Microtus alleni (True). 



Neofiber alleni True, Science, iv, 1884, p. 34. 



Microtus alleni Elliot, Syn. N. Am. Mamm., F. C. M, Pub., 11, 

 1 901, p. 203, fig. 44. Zool. Ser. 

 Florida Water Vole. 



Type locality. Georgiana, Merritt's Island, Brevard County, Florida. 



Geogr. Distr. Eastern Florida from Indian River on the north 

 to Eden on the south, and to Gainsville in the interior. The limits 

 of this species are not exactly known; and it may go beyond the 

 boundaries given. 



Genus 82. Fiber. Musk Rats. 



Fiber G. Cuv., Lemons d'Anat. Comp., i, 1800, tab. i. Type Castor 

 zihethicus Linnaeus. 



Ondatra Lacep., Tab. Div. Sous-div. Ord. et Gen. Mamm., 1799, 

 p. 9. (nee Link.) 



Moschomys Billb., Syn. Faun. Scandinav., i, 1828, Mamm., Con- 

 spectus A. ■: 



614. Fiber zibethicus (Linnaeus). 



Castor zihethicus Linn., Syst. Nat., i, 1766, p. 79. 



Fiber osoyoosensis Lord, Proc. Zool. Soc, 1863, p. 97. 



Fiber zibethicus Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 

 1901, p. 212, fig. 49. Zool. Ser. 

 Musk Rat. Ondatra, Indian name. 



Type locality. Eastern Canada. 



Geogr. Distr. Labrador to the Gulf States, excepting possibly 

 the Dismal Swamp, Virginia, and from the Atlantic Coast to the 

 Rocky Mountains north of the Gulf States and Arizona, and south 

 of Keewatin, Canada. 



a. Fiber zibethicus ripensis Bailey. 



Fiber zibethicus ripensis Bailey, Proc. Biol. Soc. Wash., xv, 1902, 

 p. 119. 

 Pecos River Musk Rat. 



Type locality. Pecos River, at Carlsbad, Eddy County, New 

 Mexico. 



