The name L. n. yerbabuenae Martinez and Villa, was based on specimens from Yerbabuena in the state of Guerrero. The specimens, including the holotype, on which this name was based have been destroyed. Luis de la Torre (Fieldiana, 37:698, 1955) examined a topotype of yerbabuenae and was unable to distinguish this specimen from a topotype of nivalis from Orizaba. Davis and Russell (Jour. Mamm., 33:236, 1952) identified as L. n. nivalis one bat from Morelos, taken approximately 32 miles NE of the type locality of yerbabuenae, noting that its third finger was much shorter than in specimens from the Big Bend of Texas. I judge L. n. yerbabuenae to be a synonym of nivalis as does de la Torre.
Acknowledgment is made to Dr. W. B. Davis of the Agricultural and Mechanical College of Texas and Mr. Colin C. Sanborn of the Chicago Natural History Museum for loan of comparative material. I am grateful also to the Kansas University Endowment Association and National Science Foundation for support of field work, and to Dr. Rollin H. Baker for guidance in my study.
Measurements.—The following measurements in millimeters include those of the type, and the average and extreme measurements of the type and 22 adult topotypes: total length, 79, 79 (73-86); length of hind foot, 16, 16 (14-17); length of ear, 16, 16.5 (15-17); length of forearm, 50.0, 50.6 (47.3-55.0); greatest length of skull, 28.1, 27.5 (26.1-29.0); zygomatic breadth, 9.2, 9.6 (8.6-11.2); interorbital constriction, 4.6, 4.8 (4.1-5.4); mastoidal breadth, 11.7, 11.6 (11.0-12.1); breadth of braincase, 10.5, 10.7 (10.1-11.2); greatest height of skull, 9.8, 10.0 (9.6-10.5); alveolar length of maxillary tooth-row, 8.9, 9.1 (8.5-9.6); and length of third finger, 110.8, 111.3 (106.9-116.1).
Specimens of L. n. longala examined.—Total number, 109, as follows: Texas: cave W side Emory Peak, Chisos Mts., Brewster Co., 7500 ft., 5 specimens (A and M College of Texas). Coahuila: 12 mi. S and 2 mi. E Arteaga, 7500 ft., 24 (KU). Nuevo León: Cerro Potosí, Municipio de Galeana, 11,500 ft., 80 (Chicago Nat. Hist. Mus.).
Transmitted December 5, 1955.