_Remarks._--These three specimens have proportionately longer tails than typical _P. o. pallidus_ from central Veracruz; total length and length of tail of two adult males are 575, 295, and 568, 290 respectively. This marsupial has been previously unrecorded from Tamaulipas or from so northward a locality. The four-eyed opossum evidently ranges northward along the east face of the Sierra Madre Oriental within the humid division of the Upper Tropical Life-zone. These animals, all males, were taken in steel traps baited with the bodies of skinned mice or birds. Sets were made along well-used trails leading from a densely vegetated arroyo into a corn field through openings in a fence of roughly piled logs. The elevation of this locality is approximately 2500 feet. ~Desmodus rotundus murinus~ Wagner Vampire Bat _D[esmodus] murinus_ Wagner, Schreber's Saeugthiere, Suppl., 1:377, 1840. (Type from Mexico.) _Desmodus rotundus murinus_ Osgood, Field Mus. Nat. Hist., publ. 155, zool. ser., 10:63, January 10, 1912. _Specimens examined_, 9 as follows: 12 km. W and 8 km. N Ciudad Victoria, 2500 ft., 3; 70 km. [by highway] S Ciudad Victoria and 6 km. W of the [Pan-American] highway [at El Carrizo], 6. _Remarks._--Vampire bats were taken at two caves. At the cave called "Los Troncones", 12 kilometers west and 8 kilometers north of Ciudad Victoria, seven bats were shot down; three were saved. The second cave, south of Ciudad Victoria, was considerably damper than the first. Vampires were found in a small side chamber; nine bats were knocked down. No other kinds of bats were present in either cave. ~Sylvilagus floridanus connectens~ (Nelson) Florida Cottontail _Lepus floridanus connectens_ Nelson, Proc. Biol. Soc. Washington, 17:105, May 18, 1904. (Type from Chichicaxtle, Veracruz, Mexico.) _Sylvilagus floridanus connectens_ Lyon and Osgood, Catal. Type spec. Mamm. U. S. Nat. Mus., Bull. 62:32, January 28, 1909. _Specimens examined_, 2 from 70 km. [by highway] S. Ciudad Victoria and 2 km. W El Carrizo. ~Sciurus aureogaster aureogaster~ F. Cuvier Red-bellied Squirrel [_Sciurus_, by implication] _aureogaster_ F. Cuvier, Hist. nat. mammiferes, vol. 6, livr. 59, pl. with text, September, 1829. Binomial published at end of work only, vol. 7, tabl. generale et methodique, p. 4, 1842. (Type from "California" = eastern Mexico.) _Specimens examined_, 13 as follows: 43 km. S Ciudad Victoria, 1; 70 km. [by highway] S Ciudad Victoria, and 6 km. W of [Pan-American] highway [at El Carrizo], 3; 70 km. [by hwy.] S Victoria and 2 km. W El Carrizo, 9.