1953. Oryzomys melanotis rostratus, Hooper, Occ. Papers Mus. Zool., Univ. Michigan, 544:8, March 25.
Distribution in Tamaulipas.—Extreme southeastern part of state, in tropical area.
Ingles (1959:395) reported one specimen from two miles north of Ciudad Mante as O. melanotis; here it is referred to O. m. rostratus on geographic grounds.
Records of occurrence.—Specimens examined, 2: 2 km. W El Carrizo, 1; Rancho Pano Ayuctle, 25 mi. N El Mante and 3 km. W Highway, 1.
Additional records: 2 mi. N Cd. Mante (Ingles, 1959:395); Altamira (Goldman, 1918:54).
Oryzomys alfaroi huastecae Dalquest
1951. Oryzomys alfaroi huastecae Dalquest, Jour. Washington Acad. Sci., 41:363, November 14, type from 10 km. E Platanito, San Luis Potosí.
Distribution in Tamaulipas.—Known only from Rancho del Cielo (Hooper, 1953:8).
Oryzomys fulvescens
Pygmy Rice Rat
The pygmy rice rat in Tamaulipas was collected in grass. Two kilometers west of El Carrizo in grass around a sugar cane field, traps, baited with scraps of deer meat, caught Oryzomys fulvescens, Sigmodon hispidus, Peromyscus leucopus and Liomys irroratus. Seven kilometers north of Tampico, O. fulvescens was taken along with Peromyscus leucopus, Sigmodon hispidus and Baiomys taylori.