_Peromyscus spicilegus evides_ Osgood, Proc. Biol. Soc. Washington, 17:64, March 21, 1904, type from Juquila, Oaxaca. _Peromyscus boylei evides_ Osgood, N. Amer. Fauna, 28:152, April 17, 1909. _Range._--Northern part of state. _Specimens examined_, 22: nos. 100450-100471, distributed by localities as follows: 1-1/2 mi. SSE Tacámbaro, 5,700 ft., 16; 1-3/4 mi S Tacámbaro, 5,700 ft., 1; 1 mi. E and 2-1/2 mi. S Tacámbaro, 4,700 ft., 5. _Remarks._--Osgood (1909:153) recorded 31 specimens from Los Reyes. Weights recorded by the collectors of our specimens for 13 males from the vicinity of Tacámbaro, are 24.8 (17.2-37.1) and for 9 females 25.0 (20.0-31.5) grams. These weights include those of subadults as well as those of adults. =Peromyscus boylii levipes= Merriam Brash Mouse; Spanish, Ratón de Chaparral _Peromyscus levipes_ Merriam, Proc. Biol. Soc. Washington, 12:123, April 30, 1898, type from Mount Malinche, Tlaxcala. _Peromyscus boylei levipes_, Osgood, N. Amer. Fauna, 28:153, April 17, 1909. _Range._--Probably central-eastern part of state. _Remarks._--Osgood (1909:155) records one specimen of this subspecies from Pátzcuaro. =Peromyscus hylocetes= Merriam Woods Mouse; Spanish, Ratón Ocotero _Peromyscus hylocetes_ Merriam, Proc. Biol. Soc. Washington, 12:124, April 30, 1898, type from Pátzcuaro, 7,000 feet, Michoacán; Osgood, N. Amer. Fauna, 28:159, pl. 3, fig. 8, April 17, 1909. _Range._--Mountainous parts of state. _Specimens examined_, 24: nos. 100472, 100542, both from 9 mi. SE Pátzcuaro at 8,000 feet altitude; 1358-1365 of Bernardo Villa R., from Cerro Curitzarán, 3.5 km. NNW San Juan, 2,200 M.; 52178, 52185, 52187-52192, 52197, 52198, 52203, 52213-52215, from Tancítaro at elevations of 6,000 to 10,000 ft. _Remarks._--All of the specimens were taken in pine forest. The old male from nine miles southeast of Pátzcuaro weighs 43.7 grams and the younger male from there 35 grams. The adults from Tancítaro have longer diastemae and some have the braincase more prolonged posteriorly, than in specimens from the vicinities of San Juan and Pátzcuaro but individual variation is considerable and we are unable to differentiate some of the adults from Tancítaro from those from elsewhere. =Peromyscus truei gratus= Merriam Piñon Mouse; Spanish, Ratón Piñonero _Peromyscus gratus_ Merriam, Proc. Biol. Soc. Washington, 12:123, April 30, 1898, type from "Tlalpam," D. F. _Peromyscus sagax_ Elliot, Field Columb. Mus., Chicago, zoöl. ser., 3:142, February, 1903, type from La Palma, Michoacán. _Peromyscus pavidus_ Elliot, Field Columb. Mus., Chicago, zoöl. ser., 3:142, February, 1903, type from Pátzcuaro, Michoacán. _Peromyscus zelotes_ Osgood, Proc. Biol. Soc. Washington, 17:67, March 21, 1904, type from Queréndaro, Michoacán. _Peromyscus truei gratus_, Osgood, N. Amer. Fauna, 28:173, April 17, 1909.