63 



Stunkard, H. W. 1919. On the specific identity of Heronimus chelydrae 



MacCallum and Aorchis extensus Barker and Parson. J. Paras itol. 



6:11-18. 

 Stunkard, H. W. 1924a. On some trematodes from Florida turtles. Trans. 



Amer. Microsc. Soc. 43:97-113. 

 Stunkard, H. W. 1924b. Sur I' Unicaecum ruszkowskii , trematode sanguicole 



des tortues d'eau douce de I'Amerique du Nord. Ann. Parasitol. 



5:117-126. 

 Sullivan, B. and A. Riggs. 1967a. Structure, function and evolution of 



turtle hemoglobins. I. Distribution of heavy hemoglobins. Comp. 



Biochem. Physiol. 23:437-447. 

 Sullivan, B. and A. Riggs. 1967b. Structure, function and evolution of 



turtle hemoglobins. II. Electrophoretic studies. Comp. Biochem. 



Physiol. 23:449-458. 

 Sullivan, B. and A. Riggs. 1967c. Structure, function and evolution of 



turtle hemoglobins. III. Oxygenation properties. Comp. Biochem. 



Physiol. 23:459-474. 

 Sumichrast, F. 1873. Coup d'oeil sur la distribution geographique des 



reptiles au Mexique. Archs. Sci. Phys. Nat. 46:233-250. 

 Sumichrast, F. 1880. Contribution a I'histoire naturelle du Mexique. 



1. Notes sur une collection de reptiles et de batraciens de la 



partie occidentale de I'Isthme de Tehuantepec. Bull, Soc. Zool. 



France 5:162-190. 

 Sumichrast, F. 1881-1882. Contribucion a la historia natural de Mexico. 



I. Notas acerca de una coleccion de reptiles y batracios de la 



parte occidental del Istmo de Tehuantepec. Naturaleza 5:268-293. 

 Sumichrast, F. 1882. Enumeracion de las especies de reptiles observados 



en la parte meridional de la Republica Mexicana. Naturaleza 6:31-45. 

 Swanson, P. L. 1939. Herpetological ntoes from Indiana. Amer. Midi. 



Natur. 22:684-695. 

 Swanson, P. L. 1945. Herpetological notes from Panama. Copeia 1945(4): 



216. 

 Swanson, P. L. 1952. The reptiles of Venango County, Pennsylvania. 



Amer. Midi. Natur. 47(1) :161-182. 



Tamsitt, J. R. and D. Valdivieso. 1963. The herpetofauna of the Caribbean 



Islands, San Andres and Providencia. Rev. Biol. Trop. 11(2) :131-139. 

 Tanner, V. M. 1928. Distributional list of the amphibians and reptiles 



of Utah, No. 2. Copeia (166): 23-28. 

 Tanner, V. M. 1929. A distributional list of the amphibians and reptiles 



of Utah. Copeia (171):46-52. 

 Tanner, W. W. and W. G. Robison, Jr. 1960. Herpetological notes for 



northwestern Jalisco, Mexico. Herpetologica 16(1) :59-62. 



