18 



LITERATURE CITED 



Acker, R.L., and J.H. Larsen, Jr. 1979. A functional analysis of 



morphological variation in larval Scaph iopus intemiontanus. Am. 



Zool. 19: 1012. "^ 



Aleksiuk, M. 1976. Reptilian hibernation: Evidence for adaptive 



strategies in Thamnophis sirtalis parietal is . Copeia 1976: 170-178. 

 Aleksiuk, M., and P.T. GregoryT 1775. Regulation of seasonal mating 



behavior in Tharnnophis sirtalis parietal is . Copeia 1974: 681-689. 

 Aleksiuk, M., and K.W. Stewart. 1971. Seasonal changes in the body 



composition of the garter snake ( Tharnnophis sirtalis parietal is ) at 



northern latitudes. Ecology 52: 405-490. 

 Altig, R., and J. P. Kelly. 1974. Indices of feeding in anuran tadpoles 



as indicated by gut characteristics. Herpetologica 30: 200-203. 

 Anderson, B.L. 1978. Rocky Mountain wood frog habitat evaluation 



study. Unpub. Rep. Colo. Div. Wildl., Denver. 

 Anderson, P. 1947. Observations on the denning habits of the prairie 



rattlesnake, Crotalus viridis viridis (Rafinesque). Nat. Hist. Misc. 



Chic. Acad. ScTTTTT-?;: 

 Aspland, K.K. 1964. Seasonal variation in the diet of Urosaurus ornatus 



in a riparian comunity. Herpetologica 20: 91-94. 

 Auffenberg, W. 1955. A reconsideration of the racer. Coluber 



constrictor , in eastern United States. Tulane Stud. Zool. 2: 89-155. 



Bagdonas, K.R. 1968. Variation in Rocky Mountain wood frogs. M.S. 



Thesis. Colorado State Univ., Ft. Collins. 

 Bagdonas, K.R. 1971. Differentiation of western wood frogs. Ph.D. 



Diss. Colorado State Univ., Ft. Collins. 

 Bagdonas, K.R., and D. Pettus. 1976. Genetic compatibility in wood 



frogs (Amphibia, Anura, Ranidae). J. Herp. 10: 105-112. 

 Ballinger, R.E., and D.W. Tinkle. 1972. Systematics and evolution of 



the genus Uta (Sauria: Iguanidae). Misc. Publ. Mus. Zool. Univ. 



Mich. 14?rT-83. 

 Ballinger, R.E., D.L. Droge, and S.M. Jones. 1981. Reproduction in a 



Nebraska Sandhills population of the northern prairie lizard 



Sceloporus undulatus gannani . Am. Midi. Nat. 106: 157-164. 

 Ballinger, R.E., J.D. Lynch, and P.H. Cole. 1979. Distribution and 



natural history of amphibians and reptiles in western Nebraska with 



ecological notes on the herptiles of Arapaho Prairie. Prairie Nat. 



11: 65-74. 

 Banta, B.H. 1965. A preliminary report of the herpetofauna of a seven 



mile transect of the Black Forest, El Paso County, Colorado. J. 



Colo.-Wyo. Acad. Sci. 5: 55-56. 

 Barclay, J.S. 1980. Impact of stream alterations on riparian 



communities in south central Oklahoma. U.S. Fish and Wildl. Serv., 



FWS/OBS-80/17, August 1980. 

 Bauerle, B., D.L. Spencer, and W. Wheeler. 1975. The use of snakes as 



indicator species. Copeia 1975: 366-368. 

 Baxter, G.T. 1947. The amphibians and reptiles of Wyoming. Wyo. Wildl. 



11: 30-34. 



