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Fox, W.
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Maslin, T. P.
1959. An annotated check list of the amphibians and reptiles of Colorado. Univ. Colorado Studies, Ser. Biol. No. 6, 98 pp.
1959. An annotated check list of the amphibians and reptiles of Colorado. Univ. Colorado Studies, Ser. Biol. No. 6, 98 pp.
Ruthven, A. G.
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Schmidt, K. P.
1953. A check list of North American amphibians and reptiles. Univ. Chicago Press, vii + 280 pp.
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Smith, H. M.
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1956. Handbook of amphibians and reptiles of Kansas (2nd ed.). Univ. Kansas Mus. Nat. Hist. Misc. Publ. No. 9, 356 pp.
Smith, H. M., andBrown, B. B.
1946. The identity of certain specific names inThamnophis. Herpetologica, 3:71-72.
1946. The identity of certain specific names inThamnophis. Herpetologica, 3:71-72.
Smith, H. M., andTaylor, E. H.
1945. An annotated check list and key to the snakes of Mexico. Bull. U. S. Nat. Mus., 187, 239 pp.
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Stebbins, R. C.
1954. Amphibians and reptiles of western North America. McGraw-Hill Book Co., Inc., xxiv + 528 pp.
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Van Denburgh, J.
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1924. Notes on the herpetology of New Mexico, with a list of the species known from the state. Proc. California Acad. Sci., 4th ser., 13(12):189-250.
Van Denburgh, J., andSlevin, J.
1918. The garter-snakes of Western North America. Proc. California Acad. Sci., 4th ser., 8:181-270.
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Woodbury, A. M.
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Wright, A. H., andWright, A. A.
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Transmitted November 8, 1960.