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_.
A female obtained on March 2, at Rancho Pano Ayuctle, had 4 embryos 16
mm. in crown-rump length.
=Oryzomys fulvescens fulvescens= (Saussure)
1860. _H[esperomys]. fulvescens_ Saussure, Revue et Mag.
Zool., Paris, ser. 2, 12:102, March, type from Veracruz;
fixed by Merriam (Proc. Washington Acad. Sci., 3:295, July
26, 1901) at Orizaba.
1897. _Oryzomys fulvescens_, J. A. Allen and Chapman, Bull.
Amer. Mus. Nat. Hist., 9:204, June 16.
_Distribution in Tamaulipas._--Reported only from Rancho del
Cielo (Goodwin, 1954:10).
=Oryzomys fulvescens engracie= Osgood
1945. _Oryzomys fulvescens engracie_ Osgood, Jour. Mamm.,
26:300, November 14, type from Hacienda Santa Engracia (32
km. N), NW of Cd. Victoria, Tamaulipas.
_Distribution in Tamaulipas._--Central and southeast parts
of state.
_Records of occurrence._--Specimens examined, 13: 2 km. W El
Carrizo, 5; Rancho Pano Ayuctle, 25 mi. N, 3 km. W El Mante,
6; 10 km. N, 8 km. W El Encino, 1; 7 km. N Tampico, 1.
Additional record: Altamira (Osgood, 1945:300).
=Reithrodontomys megalotis hooperi= Goodwin