Family. _Paramphistomidæ_, Stiles and Goldberger, emend. 1910 234 Sub-family. _Cladorchiinæ_, Fischoeder, 1901 234 Genus. _Watsonius_, Stiles and Goldberger, 1910 234 _Watsonius watsoni_, Stiles and Goldberger, 1910 234 Family. _Gastrodisciidæ_ 236 Genus. _Gastrodiscus_, Lkt., 1877 236 _Gastrodiscus hominis_, Lewis and McConnell, 1876 236 Family. _Fasciolidæ_, Railliet, 1895 237 Sub-family. _Fasciolinæ_, Odhner, 1910 237 Genus. _Fasciola_, L., 1758 237 _Fasciola hepatica_, L., 1758 237 Halzoun 242 _Fasciola gigantica_, Cobbold, 1856 244 Sub-family. _Fasciolopsinæ_, Odhner, 1910 245 Genus. _Fasciolopsis_, Looss, 1898 245 _Fasciolopsis buski_, Lank., 1857 245 _Fasciolopsis rathouisi_, Ward, 1903 246 _Fasciolopsis goddardi_, Ward, 1910 247 _Fasciolopsis fülleborni_, Rodenwaldt, 1909 247 Family. _Troglotremidæ_, Odhner, 1914 249 Genus. _Paragonimus_, Braun, 1899 249 _Paragonimus ringeri_, Cobb., 1880 249 Family. _Opisthorchiidæ_, Braun, 1901 252 Sub-family. _Opisthorchiinæ_, Looss, 1899 252 Genus. _Opisthorchis_, R. Blanch., 1845 252 _Opisthorchis felineus_, Riv., 1885 252 Genus. _Paropisthorchis_, Stephens, 1912 255 _Paropisthorchis caninus_, Barker, 1912 255 Genus. _Amphimerus_, Barker, 1912 (?) 257 _Amphimerus noverca_, Barker, 1912 (?) 258 Genus. _Clonorchis_, Looss, 1907 258 _Clonorchis sinensis_, Cobbold, 1875 258 _Clonorchis endemicus_, Baelz, 1883 259 Sub-family. _Metorchiinæ_, Lühe, 1909 261 Genus. _Metorchis_, Looss, 1899, emend. auctor. 261 _Metorchis truncatus_, Rud., 1819 261 Family. _Heterophyiidæ_, Odhner, 1914 262 Genus. _Heterophyes_, Cobbold, 1866 262 _Heterophyes heterophyes_, v. Sieb., 1852 262