1949. An overwintering colony of Coluber c. constrictor (Say) and Elaphe o. obsoleta (Say). Herpetologica, 5:90. Parker, M. V. 1941. The trematode parasites from a collection of amphibians and reptiles. Jour. Tennessee Acad. Sci., 16(1):27-45. Peters, J. A. 1942. Reptiles and amphibians of Cumberland County, Illinois. Copeia, 1942(3):182-183. Pope, C. H. 1935. The reptiles of China. Amer. Mus. Nat. Hist., Nat. Hist. Cent. Asia, v. 10, lii + 604 pp. 1944. Amphibians and reptiles of the Chicago area. Chicago Nat. Hist. Mus. Press, 275 pp., 12 pls. Pope, T. E. B. and Dickinson, W. E. 1928. The amphibians and reptiles of Wisconsin. Bull. Pub. Mus. City of Milwaukee, 8(1):1-138. Richmond, N. D. and Goin, C. J. 1938. Notes on a collection of amphibians and reptiles from New Kent County, Virginia. Ann. Carnegie Mus., 27:301-310. Rossman, D. A. 1960. Herpetological survey of the pine hills area of southern Illinois. Quart. Jour. Florida Acad. Sci. (1959), 22(4):207-225. Schmidt, K. P. and Necker, W. L. 1935. Amphibians and reptiles of the Chicago region. Bull. Chicago Acad. Sci., 5(4):57-77. Schroder, R. C. 1950. Hibernation of blue racers and bull snakes in western Illinois. Nat. Hist. Misc., 75:1-2. Shannon, F. A. 1950. Coluber constrictor mormon--a state record for Arizona. Herpetologica, 6:59. Smith, H. M. 1956. Handbook of amphibians and reptiles of Kansas. Univ. Kansas Mus. Nat. Hist. Misc. Publ., 9:357 pp. Smith, P. W. 1947. The reptiles and amphibians of east central Illinois. Bull. Chicago Acad. Sci., 8(2):21-40. 1961. The amphibians and reptiles of Illinois. Bull. Illinois Nat. Hist. Surv., 28(1):1-298. Stains, H. J. 1956. The raccoon in Kansas. Univ. Kansas Mus. Nat. Hist. Misc. Publ., No. 10, pp. 1-76, pls. 1-4. Stewart, P. L. 1959. Lung flukes of _Thamnophis_ and _Coluber_ in Kansas. Unpublished thesis University of Kansas Library, pp. 1-62. Stickel, W. H. and Cope, J. B. 1947. The home ranges and wandering of snakes. Copeia, 1947:127-136. Storer, D. H. 1839. Reports on the ichthyology and herpetology of Massachusetts. Comm. Zool. and Bot. Surv. Mass., Boston, 201-258. Surface, H. A. 1906. The serpents of Pennsylvania. Pennsylvania State Dept. Agr. Monthly Bull., Div. Zool., 4(4 and 5):113-208. Tinkle, D. W. 1959. Observations of reptiles and amphibians in a Louisiana swamp. Amer. Midl. Nat, 62 (11):189-205. Trowbridge, A. H. 1937. Ecological observations on amphibians and reptiles collected in southeastern Oklahoma during the summer of 1934. Amer. Midl. Nat. 18(2):285-303. Uhler, F. M., Cottam, C. and Clarke, T. E.