344 BULLETIN 128, UNITED STATES NATIONAL MUSEUM, 



t*Peromyscus tniei gratus (Merriam). 



1898. Peromyscus gratus Merriam, Proc. Biol. Soc. Washing- 

 ton, vol. 12, p. 123. April 30, 1898. 



1903. Peromyscus sagax Elliot, Field Columb. Mus., publ. 71, 

 zool. ser., vol. 3, p. 142. February, 1903. (Patzcuaro, Michoa- 

 can, Mexico.) 



1903. Peromyscus pavidus Elliot, Field Columb. Mus., publ, 71, 

 zool. ser., vol. 3, p. 142. February, 1903. (Patzcuaro, Michoa- 

 can, Mexico.) 



tl904. Peromyscus zelotes Osgood, Proc. Biol. Soc. Washington, 

 vol. 17, p. 67. March 21, 1904. (Querendaro, Michoacan, 

 Mexico.) 



Type Locality. — Tlalpam, Federal District, Mexico. 



Range. — South central Mexico in the States of Hidalgo, Mexico, 

 Michoacan, and Queretaro; possibly south to central Oaxaca. 



t*Peromyscus truei gentilis (Osgood), 



1904. Peromyscus gratus gentilis Osgood, Proc. Biol, Soc. Wash- 

 ington, vol. 17, p. 61. March 21, 1904. 



1909. Peromyscus tniei gentilis Osgood, North Amer. Fauna, No, 



28, p. 175. April 17, 1909. 

 Type Locality. — Lagos, Jalisco, Mexico. 

 Range. — North Central Mexico, chiefly in the States of Durango, 



Zacatecas, and northern Jalisco; east to southern Coahuila, 



*Peromyscus nasutus (Allen). 



1891. Vesperimus nasutus Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 3, p. 299. June 30, 1891. 

 1909. Peromyscus nasutus Osgood, North Amer. Fauna, No. 



28, p. 176.' April 17, 1909. 

 Type Locality. — Estes Park, Larimer Count};^, Colorado. 

 Range. — Mountains of Colorado, New Mexico, eastern Arizona, 



and western Texas, chiefly east of the Continental Divide. 



t*Peromyscus polius Osgood. 



1904. Peromyscus polius Osgood, Proc. Biol. Soc. Washington, 



vol. 17, p. 61. March 21, 1904. 

 Type Locality. — Colonia Garcia, Chihuahua, Mexico. 

 Range. — Known only from the type locality. 



*Peromyscus difficilis difficilis (Allen). 



1891. Vesperimus difficilis Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 3, p. 298. June 30, 1891. 

 1897. [Peromyscus] difficilis Trouessart, Catal. Mamm. viv. f oss., 



p. 518. 

 Type Locality. — ^Sierra de Valparaiso, Zacatecas, Mexico. 



