(After Leuckart) 223 130 A group of cercariæ of _Echinostoma_ sp. 225 131 Development of _Fasciola hepatica_, L. (After Leuckart) 226 132 Young redia of _Fasciola hepatica_. (From Leuckart) 227 133 Older redia of _Distoma echinatum_ 227 134 Cercaria of _Fasciola hepatica_. (After Leuckart) 228 135 Encysted cercaria of _Fasciola hepatica_. (After Leuckart) 228 136 _Watsonius watsoni._ (After Shipley) 234 137 _Watsonius watsoni_: ventral projection composed from a series of transverse sections. (After Stiles and Goldberger) 235 138 _Gastrodiscus hominis._ (After Leuckart) 236 139 _Fasciola hepatica_, L. 238 140 _Fasciola hepatica_, showing the gut and its branches 239 141 _Fasciola hepatica_, L. (After Claus) 239 142 _Fasciola hepatica_: egg from liver of sheep. (After Thomas) 240 143 _Limnæus truncatulus_, Müll. (From Leuckart) 240 144 Young _Fasciola hepatica_. (From Leuckart) 242 145 _Fasciola gigantica._ (After Looss) 243 146 _Fasciolopsis buski_, Lank. (After Odhner) 245 147 _Fasciolopsis rathouisi_, Poir. (After Claus) 246 148 _Fasciolopsis fülleborni._ (After Fülleborn) 248 149 _Paragonimus ringeri_, Cobb. (After Katsurada) 250 150 _Paragonimus ringeri_, Cobb. (After Kubo) 250 150A _Paragonimus westermanii_, Kerb. (After Leuckart) 250 151 Egg of _Paragonimus ringeri_, Cobb. (After Katsurada) 251 152 Egg of _Opisthorchis felineus_ 253 153 _Opisthorchis felineus._ (After Stiles and Hassall) 253 154 _Opisthorchis pseudofelineus._ (After Stiles) 254 155 _Parapisthorchis caninus._ (After Stephens) 256 156 _Amphimerus noverca_, Braun. (After McConnell) 257 157 _Metorchis conjunctus._ (After Cobbold) 258 158 _Clonorchis sinensis._ (After Looss) 259 159 Ova of _Clonorchis sinensis_. (After Looss) 259 160 _Clonorchis endemicus._ (After Looss) 260 161 _Clonorchis endemicus_: eggs. (After Looss) 260 162 _Metorchis truncatus_ 262 163 _Heterophyes heterophyes._ (After Looss) 263 164 _Metagonimus yokogawai._ (After Leiper) 264 165 _Dicrocœlium dendriticum_ 265 166 Eggs of _Dicrocœlium dendriticum_ 266