Calomys muriculus (Thomas, 1921) . Ann. Mag. Nat. Hist., ser. 9, 8:623.

TYPE LOCALITY: Bolivia, Santa Cruz Dept., San Antonio, Parapiti .

DISTRIBUTION: Lowlands and E. slope of Andes in Bolivia.

COMMENT: Included in callosus by Hershkovitz, 1962, Fieldiana Zool., 46: 172; see Williams and Mares, 1978, Ann. Carnegie Mus., 47: 197, 200, 214. Probably a synonym of fecundus of Pearson and Patton, 1976, J. Mammal., 57: 343 (DFW). AL includes muriculus in callosus .

ISIS NUMBER: 5301410008006008001.