_Peromyscus hylocetes_ Merriam, Proc. Biol. Soc. Washington,
12:124, April 30, 1898, type from PAitzcuaro, 7,000 feet,
MichoacAin; 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
PAitzcuaro at 8,000 feet altitude; 1358-1365 of Bernardo Villa R., from
Cerro CuritzarAin, 3.5 km. NNW San Juan, 2,200 M.; 52178, 52185,
52187-52192, 52197, 52198, 52203, 52213-52215, from TancA-taro 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 PAitzcuaro weighs 43.7 grams and the
younger male from there 35 grams. The adults from TancA-taro have
longer diastemae and some have the braincase more prolonged
posteriorly, than in specimens from the vicinities of San Juan and
PAitzcuaro but individual variation is considerable and we are unable
to differentiate some of the adults from TancA-taro from those from
elsewhere.
=Peromyscus truei gratus= Merriam