48 Mark S. Davis and George W. Folkerts 



LeConte. Unpubl. Ph.D. dissert., Univ. Minnesota, Minneapolis. 

 Berven, Keith A. 1981. Mate choice in the wood frog, Rana sylvatica. Evolu- 

 tion 35(4):707-722. 

 . 1982a. The genetic basis of altitudinal variation in the wood frog, 



Rana sylvatica. I. An experimental analysis of life history traits. Evolution 



36(5):962-983. 

 . 1982b. The genetic basis of altitudinal variation in the wood frog, 



Rana sylvatica. II. An experimental analysis of larval development. Oeco- 



logia 52:360-369. 

 , and D. E. Gill. 1983. Interpreting geographic variation in life 



history traits. Am. Zool. 23(l):85-97. 

 Collins, James P. 1975. A comparative study of the life history strategies in a 



community of frogs. Unpubl. Ph.D. dissert., Univ. Michigan, Ann Arbor. 

 , and H. M. Wilbur. 1979. Breeding Habits and Habitats of the 



Amphibians of the Edwin S. George Reserve, Michigan, with Notes on the 



Local Distribution of Fishes. Occas. Pap. Mus. Zool. Univ. Mich. No. 686. 

 Cory, Lawrence, and J. J. Manion. 1953. Predation on eggs of the wood frog, 



Rana sylvatica, by leeches. Copeia 1953(1):66. 

 Davis, Mark S., and G. W. Folkerts. 1980. A beetle (Eutheola rugiceps LeC: 



Scarabaeidae) penetrates the stomach wall of its predator {Rana sylvatica 



LeC: Amphibia). Coleopt. Bull. 34(4):396. 

 DeBenedictus, Paul A. 1974. Interspecific competition between tadpoles of 



Rana pipiens and Rana sylvatica: An experimental field study. Ecol. 



Monogr. 44:129-151. 

 DeGraaf, Richard M., and D. D. Rudis. 1983. Amphibians and Reptiles of 



New England. Univ. Mass. Press, Amherst. 

 Dickerson, Mary C. 1906. The Frog Book. Doubleday, Page and Co., Garden 



City. 

 Formanowicz, Daniel R., and E. D. Brodie. 1982. Relative payabilities of 



members of a larval amphibian community. Copeia 1982(l):91-97. 

 Gatz, A. John. 1973. Algal entry into the eggs of Amby stoma maculatum. J. 



Herpetol. 7:137-138. 

 Gilbert, Perry W. 1942. Observations on the eggs of Amby stoma maculatum 



with especial reference to the green algae found within the egg envelopes. 



Ecology 23(2):215-227. 

 . 1944. The alga-egg relationship in A mbystoma maculatum, a case 



of symbiosis. Ecology 25(3):366-369. 

 Golden, M. S. 1968. Oak-hickory components of the forests of the Alabama 



Piedmont. Unpubl. M.S. thesis, Auburn Univ., Auburn. 

 Gosner, Kenneth L. 1960. A simplified table for staging anuran embryos and 



larvae with notes on identification. Herpetologica 15(1 4): 203-2 10. 

 Green, N. B. 1952. A key to the eggs of West Virginia Salientia. Proc. W. Va. 



Acad. Sci. 24:36-38. 

 Hammen, Carl S., and V. H. Hutchinson. 1962. Carbon dioxide assimilation 



in the symbiosis of the salamander, Ambystoma maculatum, and the alga, 



Oophila amblystomatis. Life Sci. 10:527-532. 

 Harper, Roland M. 1943. Forests of Alabama. Geol. Surv. Ala. Monogr. 10. 



