FIBER. 253 



Geogr. Distr. Unknown. 



Genl. Char. Size small; color paler than F. zibethicus. Skull 

 narrow; nasals short, rounded at posterior end; incisors hea\'}". molars 

 hght. 



Color. Above Ught brown; belly buff brown; throat gray with a 

 dusky stripe on the" chin; white spot over each nostril. 



Measuretfieuts. Total length. 470; tail vertebrae. 202: hind foot, 

 67. Skull: basal length, 55; length of nasals, 18; zygomatic width, 

 35 ; mastoid breadth. 25 ; alveolar length of upper molar series, 15. 



b. Fiber zibethieitu pallidjis Meams. 



Fiber zibethicus pallidas Meams. Bull. Am. Mus. Nat. Hist. N. Y.. 



i8qo, p. 280. Elliot, Syn. N. Am. Mamm.. F. C. M. Pub.. 11, 



1901. p. 213. Zool. Ser. Id. Mamm. Middle Amer. & W. 



Indies, F. C. M. Pub., iv. Pt. i, 1904. p. 308, fig. 55. Zool. Ser. 



P.\LE Musk Rat. 



Type locality. Fort Verde, Yavapai County, Arizona. 

 Geogr. Distr. Lower California and State of Sonora, Mexico, 

 north to Montana. 



c. FihfT zilitthiruR rtvaliriu.'< Bangs. 



Fiber zibethicus rivalicius Bangs, Proc. Bost. Soc. Nat. Hist., 

 1895, P- 541- Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 

 iQoi, p. 213. Zool. Ser. 

 Rel.^.ted Musk R.\t. 



Type locality. Burbridge. Plaquemines Parish. Louisiana. 

 Geogr. Distr. Lower Mississippi region and swampy coasts of 

 Louisiana and Alabama. 



d. Fiber zibethicus aquiloniits Bangs. 



Fiber zibethicus aquilonius Bangs, Proc. N. Engl. Zool. Club, i, 

 1899, p. II. Elliot, Syn. N. Am. Mamm.. F. C. M. Pub.. 11, 

 1901, p. 213. Zool. Ser. 

 Northern Musk R.\t. 



Type locality. Rigoulette. Hamilton Inlet. Labrador. 



Geogr. Distr. Labrador. Range unknown. 



e. Fiber zihefhirus Intdsonius Preble. 



Fiber zibetiiicus hudsonius Preble. N. Am. Faun., No. 22, 1902, 



P- 53- 

 Hudson Bay Musk Rat. 



Type locality. Fort Churchill. Keewatin, Canada. 

 Geogr. Distr. Keewatin, Canada. Range unknown. 

 Genl. Char. Size small. Skull with high interorbital crest: mo- 

 lars small. 



