_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 Leon_: Cerro Potosi, Municipio de Galeana, 11,500 ft., 80 (Chicago Nat. Hist. Mus.). _Transmitted December 5, 1955._