LITERATURE CITED 



Barker, F. D., and Covet, G. W. 



1911. A new species of trematode from the painted terrapin, Chrysemus 



marginata Agassiz. Nebraska Univ. Studies, vol. 11, pp. 193-218. 

 Baylis, H. a. 



1921. On tlie classification of the Ascaridae (II) : The Polydelphis group, 

 with some account of other ascarids parasitic in snakes. Parasi- 

 tology, vol. 12, p. 411. 

 Baylis, H. A., and Daubney, R. 



1926. A synopsis of the families and genera of Nematoda, pp. 1-277. 

 Baylis, H. A., and Lane, Clayton. 



1920. A revision of the nematode family Gnathostomidae. Proc. Zool. Soc. 

 London, 1920, pp. 245-310. 



BOULENGEK, C. L. 



1923. A nematode {Falcnustra chapinl n. sp.) parasitic in a North Ameri- 

 can tortoise. Parasitology, vol. 15, pp. 49-53. 

 Canavan, W. p. N. 



1929. Nematode parasites of vertebrates in the Philadelphia Zoological 

 Garden and vicinity. Parasitology, vol. 21, pp. 63-102. 

 Chandler, A. C. 



1923. Three new trematodes from Amphiuma means. Proc. U. S. Nat. Mus., 

 vol. 63, art. 3, pp. 1-7. 

 Chapin, E. a. 



1926. Report of the Hehninthological Society of Washington. Journ Para- 

 sit., vol. 12, pp. ISO. 

 Cobb, N. A. 



1928. Spiroxys amydae n. sp. Journ. Parasit., vol. 15, pp. 217. 



COHN, L. 



1901. Helniinthologische Mitteihuigen II. Arch. Naturg., vol. 70, pp. 229-252. 



COKT, W. W. 



1912. North American frog bladder flukes. Trans. Amer. Micr. Soc, vol. 



31, pp. 151-1G6. 



1915. North American frog lung flukes. Trans. Amer. Micr. Soc, vol. 34, 

 pp. 203-240. 



1919. A new distome from Rinia aurora. Univ. California Publ. Zool., vol. 

 19, pp. 283-298. 



1926. Report of the Hehninthological Society of Washington. .Journ. Para- 

 sit., vol. 12, pp. 180. 

 Crow, H. E. 



1913. Some trematodes of Kansas snakes. Kansas Univ. Sei. Bull., vol. 7, 



pp. 123-134. 



DOLLFUS, R. 



1929. Sur le genre Tclorchis. Ann. Parasit., vol. 7, pp. 29^54, 116-132. 

 Faust, E. C. 



1929. Human helmiiithology, pp. 1-616. 



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