10 PROCEEDINGS OF THE NATIONAL MUSEUM vul. 78 



Opisthoporinae, new subfamily 



Subfamily diagnosis. — Pronocephalidae : Body spindle-shaped in 

 outline. Oral sucker subterminal. Cephalic collar present. Genital 

 pore median. Testes with zones slightly overlapping and fields co- 

 inciding. Parasites of soft-shelled turtles. 



Type genus. — O'pisthopoi'us Fukui, 1929. 



REFERENCES 



Baylis, H. a. 



192S. — A new species of Notocotylus (Tfomatoda), with some remarks on 

 the genus. Ann. Mag. Nat. Hist., Lend., ser. 10, vol. 2, December, 

 pp. 582^585, figs. 1-2. 

 Beaun, Max. 



1901. — Zur Kenntuiss der Trematoden der Saugethiere. Zool. Jahrb., Jena, 

 Abt. f. Syst., vol. 14, March IS, pp. 311-348, pis. 19^20, figs. 1-17. 

 DiEsiNG, Karl Mobitz. 



1855. — Neunzehn Arten von Trematoden, Denkschr. d. k. Akad. d. Wissensch., 

 Wien., Math-naturw. Gl., vol. 10, Al.t. 1, pp. 59-70, pis. 1-3. 

 Fuhbmann, Otto. 



1928. — Zweite Klasse des Cladus Platyhelmmthes: Trematoda. Handb. d. 

 Zool. (Krumbach), Borl. &. Leipz., vol. 2, December 6, pp. 1-128, 

 figs. 1-171. 

 FuKtri, Tamao. 



1929.- — Studies on Japanese amphistomatous parasites, with revision of 

 the group. Japan. Journ. Zool., Tokyo, vol. 2, August 20, pp. 

 219-351, figs. 1^5. 

 Linton, Edwin. 



1910. — Helminth fauna of the Dry Tortugas. 2. Trematodes. (In Papers 

 from the Tortugas Laboratory, Dept. Marine Biol., vol. 4) Car- 

 negie Inst. Wash. Publication (133), pp. 11-98, pis. 1-28, figs. 

 1-241. 

 Looss, A. 



1899. — Weitere Beitrage zur Kenntniss dor Trematoden-Fauna Aegyptens, 

 zugleich Yersuch einer natiirlichen Gliederung des Genus Dis- 

 tomum Retzius. Zool. Jahrb., Jena, Abt. f. Syst., vol. 12, 

 December 28, pp. 521-784, figs. A-B, pis. 24-32, figs. 1-90. 

 1902. — Ueber neue und bekannte Trematoden aus Seeschildkroten. Nebst 

 Erorterungen zur Systematik und Nomenclatur. Zool. Jahrb., 

 Jena, Abt. f. Syst., vol. 16, November 24, pp. 411-894, figs. A-B, 

 pis. 21-32, figs. 1-181. 

 MacCallum, G. a. 



1916. — Some new species of parasitic trematodes of marine fishes. Zoo- 



pathologica, N. Y., vol. 1, August, pp. 3-38, figs. 1-16. 

 1917. — Some new forms of parasitic worms. Zoopathologica, N. Y., vol. 1, 

 June, pp. 43-75, figs. 17-36. 

 PocHE, Feanz. 



1926.— Das System der Platodaria. Arch. f. Naturg., Berl. (1925), Abt. A. 

 vol. 91, January, pp. 1-240, figs. 1-5, pis. 1-3, figs. 1-95. 

 Travassos, Lauro. 



1922. — Informagoes sobre a fauna helminthologica de Matto Grosso. Folha 

 Med., Rio de Janeiro, vol. 3 (24), p. 187. 



U. S. GOVERNMENT PRINTING OFFICE; 1931 



