Excretory System in Digenea 
REFERENCES. 
Braun, M. (1891). Die sogenannte “freischwimmende Sporocyste.” Centralbl. f. Bakt. u 
Parasit,., Orig. (1), x. 215-219. 
Cort, W. W. (1919). A New Cercariaeum from North America. Journ. Parasitol. v. 86-91, 
1 pi. 
Faust, E. C. (1918). Two New Cystocercous Cercariae from North America. Ibid, iv 
148-153, 1 pi. 
-(1919, 1919 a, 1919 6). The Excretory System in Digenea. Biol. Bull, xxxvi. 315- 
344. 
-(1921). Larval Flukes from Georgia. Trans. Am. Micro-scop. Soc. (In press.) 
Looss, A. (1894). Die Distomen unserer Fische und Frosche. Bibl. Zool. xvi. 1-296, 9 pis. 
-(1896). Recherches sur la faune parasitaire de l’Egypte. Mem. VInstitut Egyptien, 
in. 1-252, 16 pis. 
Pratt, H. S. (1919). A New Cystocercous Cercaria. Journ. Parasitol. v. 128-131. 
Ward, H. B. (1916). Notes on Two Free-Living Larval Trematodes from North America. 
Ibid. in. 10-20. 
Wright, R. R. (1885). A Free-Swimming Sporocyst. Amer. Nat. xix. 310-311. 
