_Pteronotus davyi fulvus_ (Thomas).--Ten specimens (57525-57534) from Rancho Santa Rosa, 25 km. N, 13 km. W Cd. Victoria, 260 meters, Tamaulipas, taken by W. Schaldach, V. Grissino, and R. Grimsley, from December 26, 1953, to January 5, 1954, extend the known range of this species 360 miles northward from Mirador, Veracruz (Davis and Russell, 1952:235). Another specimen from Tamaulipas in our collection is from Rancho Pano Ayuctle, 8 mi. N Gómez Fárias, 300 feet.
_Glossophaga soricina leachii_ (Gray).--Two specimens (54942-54943) from 16 mi. W, 3 mi. S Piedra, Tamaulipas, taken by Gerd H. Heinrich, on June 15, 1953, extend the known range of this species on the Gulf Coast of Mexico northward 60 miles from 5 mi. NE Antiguo Morelos, near El Pachón, Tamaulipas (de la Torre, 1954:114).
_Anoura geoffroyi lasiopyga_ (Peters).--Three specimens (36574-36576) from 2 mi. SE Jalcocotán, 3000 ft., Nayarit, the first records for the state, taken by J. R. Alcorn, on February 15, 1950, extend the known range of the species 50 miles northward from San Sebástian, Jalisco (Sanborn, 1933:27).
_Choeronycteris mexicana_ Tschudi.--Three specimens (60176-60178) from 4 km. N Joya Verde, near Huisachal, 4000 ft., Tamaulipas, taken by W. Schaldach, on July 17, 1954, extend the known range of this species eastward into the state of Tamaulipas. Eastern marginal records in northeastern Mexico were 1 mi. S and 4 mi. W Bella Unión, 7000 ft., Coahuila (Baker, 1956:174), and Hacienda Capulín, San Luis Potosí (Dalquest, 1953:27).
_Centurio senex_ Gray.--One specimen (54958) from 14 mi. W, 3 mi. S Piedra, Tamaulipas, extends the known range of the species 58 miles northward from Pano Ayuctle, near Gómez Fárias, Tamaulipas (de la Torre, 1954:114).
_Natalus mexicanus saturatus_ Dalquest and Hall.--Two specimens (54999-55000) from the Sierra de Tamaulipas, 14 mi. W, 3 mi. S Piedra, Tamaulipas, taken by Gerd H. Heinrich, on June 12, 1953, extend the known range of this species 61 miles northward from El Pachón, Tamaulipas (Goodwin, 1954:5). Forty-one other specimens have been taken from three localities between El Pachón and the new record station mentioned above.
_Rhogeëssa parvula tumida_ H. Allen.--One specimen (55192) from 4 mi. N La Pesca, Tamaulipas, taken by Gerd H. Heinrich, on May 24, 1953, extends the known range of the species on the east coast of Mexico northward 115 miles from 10 kms. WSW Ebano, Veracruz (Dalquest, 1953:58), and also northeastward 115 miles from Santa Maria, Tamaulipas (Goodwin, 1954:6). Another new marginal locality for this species, represented by 39 specimens in our collection, is 10 mi. W, 2 mi. S Piedra, 1200 ft., Tamaulipas.