Peromyscus banderanus vicinior Osgood
Tarascan Mouse; Spanish, Ratón Tarasco
Peromyscus banderanus vicinior Osgood, Proc. Biol. Soc. Washington, 17:68, March 21, 1904, type from La Salada, Michoacán.
Range.—Hot valleys of western part of state.
Specimens examined, 53: nos. 100543-100592, 100594, 100596, 100599, distributed by localities, from Tacámbaro, as follows: 2½ mi. S and 1 mi. E, 4,700 ft., 21; 4 mi. S and 1 mi E, 4,500 ft., 10; 6 mi. S, 4,000 ft., 6; 6 mi. S and 1 mi. E, 4,000 ft., 16.
Remarks.—There is much variation in size in our animals. The three largest males weigh, in grams, 67.5, 50.3, 48.9 and corresponding figures for the two heaviest, nonpregnant, females are 53.5 and 48.3 grams. Of the 14 adult females, only one was recorded as having embryos; it had two embryos each 24 millimeters in crown to rump length. Where we trapped among big boulders and among the roots of trees of the genus Ficus, Peromyscus banderanus vicinior was the only species of the genus taken. Peromyscus boylii evides occurred in the less tropical vegetation, altitudinally and zonally above P. b. vicinior.
Peromyscus melanotis Allen and Chapman
Black-eared Deermouse; Spanish, Ratón Montañero
Peromyscus melanotis Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 9:203, June 16, 1897, type from Las Vigas, 8,000 ft., Veracruz.
Range.—Higher mountains throughout state.
Specimens examined, 33: nos. 51397-51401, 52142-52166, 52172-52174, from Tancítaro.
Remarks.—The elevation recorded on the label of one specimen is 9,000 feet and on the labels of other specimens is no lower than 10,500 feet and on some is as high as 12,000 feet. The elevation of capture is not recorded for two specimens. Osgood (1909:112) previously recorded the species from 12,000 feet elevation on Mount Tancítaro.