Remarks.—These specimens are notably paler and have shorter tooth-rows than those referred to O. c. regillus.
Oryzomys fulvescens lenis Goldman
Fulvous Rice Rat; Spanish, Rata Arrocera Pigmea
Oryzomys fulvescens lenis Goldman, Proc. Biol. Soc. Washington, 28:130, June 29, 1915, type from Los Reyes, Michoacán; N. Amer. Fauna, 43:91, September 23, 1918.
Range.—Semitropical parts of state.
Remarks.—The type and one topotype so far as we know are the only specimens of this species to have been obtained from the state. The size is hardly larger than that of a large Reithrodontomys.
Sigmodon melanotis Bailey
Fulvous Cotton Rat; Spanish, Rata Algodonera Leonada
Sigmodon melanotis Bailey, Proc. Biol. Soc. Washington, 15:114, June 2, 1902, type from Pátzcuaro, 7,000 ft., Michoacán.
Range.—Central Michoacán, as now known.
Specimens examined, 8: nos. 100623-100626, 52089-52092, distributed by localities as follows: 2 mi. W Pátzcuaro (7,400 and 7,700 ft.), 2; 3½ mi. S Pátzcuaro, 7,800 ft., 2; Tancítaro, 6,000 ft., 4.
Remarks.—This species was taken along with the species S. hispidus two miles west of Pátzcuaro, and can be easily distinguished from the latter by the dark reddish as opposed to grayish color of the upperparts and by the shorter hind foot (less instead of more than 32.5 mm.).