Mus musculus subsp.?
House Mouse; Spanish, Ratón Casero
Mus musculus Linnaeus, Systema Naturae, ed. 10, 1:62, 1758, type from Upsala, Sweden.
Range.—Probably throughout state.
Specimens examined, 4: nos. 100696-100699, of which one is from Tacámbaro, 5,700 ft., and 3 are from 4 mi. S and 1 mi. E Tacámbaro, 4,500 ft.
Remarks.—In each of our specimens the belly is dark, approximately as dark as the back. The specimens caught by us were living in the wild; that is to say, they were not caught in and around buildings. Elliot (1903:141) records the species from Pátzcuaro.
Rattus rattus alexandrinus (Geoffroy)
Black Rat; Spanish, Rata Negra
Mus alexandrinus Geoffroy, Catal. Mammif. du Mus. Nat. d'Hist., Paris, p. 192, 1803, type from Alexandria, Egypt.
R[attus]. rattus alexandrinus, Hinton, Jour. Bombay Nat. Hist. Soc., 26:63, December 20, 1918.
Range.—Probably throughout tropical and subtropical parts of state; recorded also from Pátzcuaro.
Specimens examined, 3: nos. 52027, 52033 from Tancítaro and 8909 from Pátzcuaro.