_Remarks._--The cranium of No. 3160 is inseparable from those of 10 spring-taken specimens of _L. c. cinereus_ from the San Gabriel Mts., Los Angeles Co., California (KU 49727, 49729-37). Measurements of No. 3160, followed by the average and extremes (in parentheses) of the Californian series, are: Condylobasal length, 16.1, 16.5 (15.9-17.2); zygomatic breadth, 12.3, 12.4 (12.0-12.7); least interorbital constriction, 5.2, 5.4 (5.2-5.6); breadth of braincase, 8.7, 9.0 (8.5-9.3); length of palate not including terminal spine, 5.1, 5.3 (4.8-5.9). The teeth of the San Josecito specimen are comparatively unworn. A label with the skull bears the notation "talus" in parentheses, which, in so far as I am able to determine, indicates surface talus inside the cave. Therefore, the specimen in question may be of Recent origin. It is perhaps worthy of note that Lasiurus cinereus is primarily a tree-dwelling bat, although a few Recent specimens have been reported from caves (see Beer, 1954:116). _Corynorhinus tetralophodon_ Handley A single cranium of a _Corynorhinus_ LACM (CIT) 2989 was included in the original materials sent to Kansas by Professor Stock. Subsequently, this specimen was loaned to Charles O. Handley, Jr., who described it as a new species, _C. tetralophodon_. The latter is said to differ from all other plecotine bats by the retention of a well-developed fourth commissure (ridge extending posteroexternally from metacone) on the M3 (Handley, 1955:48). LITERATURE CITED BEER, J. R. 1954. A record of the hoary bat from a cave. Jour. Mamm., 35:116, February 10. BROWN, B. 1908. The Conard Fissure, a Pleistocene bone deposit in northern Arkansas: with description of two new genera and twenty new species and subspecies of mammals. Mem. Amer. Mus. Nat., 9:155-208, pls. 14-25. CUSHING, J. E., JR. 1945. Quaternary rodents and lagomorphs of San Josecito Cave, Nuevo Leon, Mexico. Jour. Mamm., 26:182-185, July 19. FINDLEY, J. S. 1953. Pleistocene Soricidae from San Josecito Cave, Nuevo Leon, Mexico. Univ. Kansas Publ., Mus. Nat. Hist., 5:633-639, December 1. FURLONG, E. L. 1943. The Pleistocene antelope, Stockoceros conklingi, from San Josecito Cave, Mexico. Carnegie Inst. Washington Publ., 551:1-8, 5 pls., February 3. GIDLEY, J. W., and GAZIN, C. L. 1938. The Pleistocene vertebrate fauna from Cumberland Cave, Maryland. Bull. U. S. Nat. Mus., 171:vi + 99, 50 figs., 10 pls. HANDLEY, C. O., JR. 1955. _A new Pleistocene bat_ (Corynorhinus) _from Mexico_. Jour. Washington Acad. Sci., 45:48-49, March 14. HOOPER, E. T. 1952. A systematic review of the harvest mice (genus _Reithrodontomys_) of Latin America. Misc. Publ. Mus. Zool., Univ. Michigan, 77:1-255, 9 pls., 24 figs., 12 maps, January 16. MALDONADO-KOERDELL, M.