Pallas' Long-tongued Bat 1844. _Monophyllus leachii_ Gray, _in_ The zoology of the voyage of H. M. S. Sulphur ..., 1 (1, Mamm.): 18, April, type from Realego, Chinandega, Nicaragua. 1913. _Glossophaga soricina leachii_, Miller, Proc. U. S. Nat. Mus., 46:419, December 31. _Distribution in Tamaulipas._--Tropical region of southern part of state. Specimens from the Sierra de Tamaulipas were taken in a cave along with _Desmodus rotundus_ and _Tadarida laticaudata_. Specimens from 20 miles north of El Mante were collected from a cave about 50 yards deep. Weights of two females from the Sierra de Tamaulipas were 9 and 12 grams. Tamaulipan specimens examined do not differ from specimens from Nicaragua that were used in comparison. _Records of occurrence._--Specimens examined, 6: Sierra de Tamaulipas, 3 mi. S, 16 mi. W Piedra, 1400 ft., 2; 10 km. N, 8 km. W El Encino, 400 ft., 1; Ojo de Agua, 20 mi. N El Mante, and 3 km. W Highway, 300 ft., 2; 8 km. NE Antiguo Morelos, 500 ft., 1. Additional records: 5 mi. NE Antiguo Morelos, near El Pachón (de la Torre, 1954:114); Altamira (Miller, 1913:420). =Leptonycteris nivalis nivalis= (Saussure) Long-nosed Bat 1860. _M. [= Ischnoglossa] nivalis_ Saussure, Revue et Mag. Zool., Paris, ser. 2, 12:492, November, type from near snow line of Mt. Orizaba, Veracruz. 1900. _Leptonycteris nivalis_, Miller, Proc. Biol. Soc. Washington, 13:126, April 6. _Distribution in Tamaulipas._--Probably throughout southern part of state, but presently known only from one locality. The specimens herein reported were taken in a cave. They provide the first record of the species from Tamaulipas and are assigned to the subspecies _nivalis_ on the basis of their brownish color and small size in comparison with specimens of _L. n. longala_ from Coahuila (see also description and measurements of _longala_ given by Stains, 1957:356). None of the specimens suggests intergradation in color between _nivalis_ and _longala_, but some are slightly larger than specimens of the former from Veracruz. Twelve females taken on August 27, 1961, were pregnant. Each carried a single embryo, the embryos averaging 15.7 (12-20) mm. in crown-rump length. The average weight of the 12 females was 26.9 (24.5-30.0) grams; 10 males weighed an average of 24.6 (21-28) grams. _Measurements._--Average and extremes of ten specimens (5 males and 5 females) are as follows: 78.2 (76-80); 0.0; 16.4 (15-17); 16.7 (16-19); length of forearm, 48.4 (45.2-54.3); length of third finger, 100.8 (99.2-103.7); greatest length of skull, 26.8 (25.9-27.6); zygomatic breadth (6 only), 10.9 (10.7-11.1); least interorbital constriction, 4.6 (4.5-4.9); mastoid breadth, 10.8 (10.5-11.2); length of maxillary tooth-row, 8.7 (8.4-9.0).