1866. _S[cotophilus]. miradorensis_ H. Allen, Proc. Acad. Nat. Sci. Philadelphia, 18:287, type from Mirador, Veracruz. 1812. _Eptesicus fuscus miradorensis_, Miller, Bull. U. S. Nat. Mus., 79:62, December 31. _Distribution in Tamaulipas._--Southern part of state, north at least to Miquihuana. Specimens from Miquihuana, Palmillas, and Nicolás were shot in flight at dusk; those from the Sierra de Tamaulipas were collected in a mist net. Five females, all taken in June, were lactating. Judging from Hall and Kelson's (1959:185) distribution map for the species, two subspecies, _E. f. fuscus_ and _E. f. miradorensis_, possibly occur in Tamaulipas, the former in the north and the latter in the south. Comparison of specimens presently available from the state (all from the southern part) with typical individuals of the two subspecies mentioned reveal that they resemble _miradorensis_ to a greater degree than _fuscus_ and they accordingly are assigned to the former. In measurements, the Tamaulipan specimens agree closely with _miradorensis_; in color, some resemble _miradorensis_ but others approach _fuscus_, possibly indicating intergradation between the two subspecies in the material at hand. Probably _E. f. fuscus_ will be found in the northern part of the state. _Measurements._--Average and extreme measurements of nine females from the Sierra de Tamaulipas and three males, two from Miquihuana (55137, 55138) and one from Palmillas (55139), are respectively: 121.3 (111-127), 115, 107, 115; 51.9 (50-56), 50, 45, 52; 10.9 (9.5-11.0), 10, 10, 11; 17.8 (17-18), 18, 18, 18; length of forearm, 49.6 (48-52.6), 48.9, 49.1, 49.1; length of tibia, 18.8 (18.2-19.3), 20.5, 17.3, 18.0; condylobasal length, 18.9 (18.5-19.3), 19.3, --, 18.8; zygomatic breadth, 13.1 (12.7-13.5), --, 13.0, 13.3; interorbital constriction, 4.2 (3.7-4.4), 4.0, 4.3, 4.1; length of maxillary tooth-row, 7.3 (7.1-7.5), --, 7.2, 7.2. Five lactating females weighed 20 (17-23) grams, and three males 17.5 (17-8) grams. _Records of occurrence._--Specimens examined, 17: Miquihuana, 6200 ft., 2; 14 mi. N, 6 mi. W Palmillas, 5500 ft., 1; Nicolás, 56 km. NW Tula, 5500 ft., 1; Sierra de Tamaulipas, 2 mi. S, 10 mi. W Piedra, 1200 ft., 12; Joya Verde, 35 km. SW [Cd.] Victoria, 3800 ft., 1. Additional record: Aserradero del Paraiso (Goodwin, 1954:186). =Lasiurus borealis= Red Bat Two subspecies of _Lasiurus borealis_ have been reported from Tamaulipas. One, _L. b. borealis_, is known only from Matamoros, whereas the other, _L. b. teliotis_, is widely distributed in the central and southern parts. A young animal from Ciudad Victoria was captured inside a house. All specimens taken in the Sierra de Tamaulipas were caught in mist nets, in which _Centurio senex_, _Pteronotus parnelli_, and _Mormoops megalophyla_ also were taken.