MAMMALS OF THE MEXICAN BOUNDARY. 



497 



Colorado Pesert, where we camped for several days, were numerous 

 heaps of mussel shells, such as muskrats leave about their feeding 

 grounds. 



Muskrats have long been known to inhabit the waters .of the Colo- 

 rado Kiver, both above and below Yuma, and in a letter from Mr. 

 Herbert Brown, dated Yuma, Arizona, November 18, 1900, I am 

 informed that he had found them at Yuma. 



a American Museum of Natural History. 

 J> Skull in skin. 



cCotype. 



d Young ol the year. 



FIBER ZIBETHICUS RIPENSIS Bailey. 

 FECOS HVSKRAT, 



Fiber zibetMats ripensis Bailey, Proc. Biol. Soc. Washington, XV, p. 119, June 2 

 1902 (original description). — Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXXI 

 Aug. 27, 1903, p. 91 (Syst. Results Study N. Am. Mam. during the years 1901 and 

 1902). 



Type-locality. — Pecos River at Carlsbad, formerly Eddy, Eddy 

 County, New Mexico. 



Description. — Mr. Vernon Bailey described this subspecies as fol- 

 lows : 



Type from the Pecos River at Carlsbad (Eddy), New Mexicp, No. 109012, U. S. National. 

 Museum, Biological Survey Collection, male aid. Collected July 25, 1901 , by Vernon Bailey. 

 Original No. ,7757. ' - 



General characters. — Size small; color paler than in zibetMcus, but darker than in paUidus; 

 skull narrow; incisors heavy. 



30639— No. 56—07 M — -32 



