_Acknowledgements._--For the loan of comparative materials we are grateful to R. H. Baker of The Museum, Michigan State University (MSU), W. H. Burt of the Museum of Zoology, University of Michigan (UMMZ), and R. G. Van Gelder of the American Museum of Natural History (AMNH). Specimens listed above that bear no designation as to collection are in the Museum of Natural History of The University of Kansas. Literature Cited ANTHONY, H. E. 1924. Preliminary report on Ecuadorean mammals. No. 6. Amer. Mus. Novit., 139:1-9, October 20. BAKER, R. H., and J. K. GREER 1962. Mammals of the Mexican state of Durango. Publ. Mus., Michigan State Univ., Biol. Ser., 2:25-154, 4 pls., 6 figs., August 27. GOODWIN, G. G. 1940. Three new bats from Honduras and the first record of _Enchisthenes harti_ (Thomas) for North America. Amer. Mus. Novit., 1075:1-3, June 27. HERSHKOVITZ, P. 1949. Mammals of northern Colombia. Preliminary report no. 5: Bats (Chiroptera). Proc. U.S. Nat. Mus., 99:429-454, fig. 38, May 10. _Transmitted June 24, 1963._