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.
1948. Los vertebrados fosiles del Cuaternario en México. Revista Soc. Mexicana Hist. Nat., 9:1-35, June.
Jackway, G. E.
1958. Pleistocene Lagomorpha and Rodentia from the San Josecito Cave, Nuevo León, México. Trans. Kansas Acad. Sci., 61: in press.
Miller, L.
1943. The Pleistocene birds of San Josecito Cavern, Mexico. Univ. California Publ. Zool., 47:143-168, April 20.
Stains, H. J.
1957. A new bat (genus Leptonycteris) from Coahuila. Univ. Kansas Publ., Mus. Nat. Hist., 9:353-356, January 21.
Stock, C.
1943. The cave of San Josecito, Mexico. New discoveries of vertebrate life of the ice age. Eng. Sci. Monthly, California Inst. Tech., Balch Grad. School Geol. Sci. Contrib., 361:1-5, September.
1950. Bears from the Pleistocene cave of San Josecito, Nuevo Leon, Mexico. Jour. Washington Acad. Sci., 40:317-321, 1 fig., October 23.
1953. El caballo pleistocenico (Equus conversidens leoni, subsp. nov.) de la cueva de San Josecito, Aramberra, Nuevo Leon. Mem. Congr. Cient. Mex., 3:170-171.
Transmitted August 18, 1958.
27-5516