Sigmodon hispidus mascotensis Allen
Hispid Cotton Rat; Spanish, Rata Algodonera Setosa
Sigmodon mascotensis Allen, Bull. Amer. Mus. Nat. Hist., 9:54, March 15, 1897, type from San Sebastián, near Mascota, Jalisco.
Sigmodon hispidus mascotensis, Bailey, Proc. Biol. Soc. Washington, 15:108, June 2, 1902.
Range.—Larger part of state.
Specimens examined, 4: nos. 100629, 3 mi. N Pátzcuaro, 6,700 ft.; 100630, 2 mi. W Pátzcuaro, 7,700 ft.; 100632, 1¾ mi. S Tacámbaro, 5,700 ft.; 100631, 6 mi. S and 1 mi. E Tacámbaro, 4,000 ft.
Remarks.—Bailey (1902:109) records a "very large" specimen from Queréndaro. Our specimens have shorter molariform tooth-rows than do those from nearer the type locality, for example, those from Tuxpan, Las Canoas, and Artenkiki, all three places in Jalisco.
Sigmodon hispidus atratus Hall
Hispid Cotton Rat; Spanish, Rata Algodonera Setosa
Sigmodon hispidus atratus Hall, Proc. Biol. Soc. Washington, 62:149, August 23, 1949, type from 6½ mi. W Zamora, 5,950 ft., Michoacán.
Range.—Known only from Zamora and the type locality.