_Metagonimus_, Katsurada, 1913; Yokogawa, Leiper, 1913 264 _Metagonimus yokogawai_, Katsurada, 1913 264 Family. _Dicrocœliidæ_, Odhner, 1910 265 Genus. _Dicrocœlium_, Dujardin 265 _Dicrocœlium dendriticum_, Rud., 1819 266 Family. _Echinostomidæ_, Looss, 1902 267 Sub-family. _Echinostominæ_, Looss, 1899 267 Genus. _Echinostoma_, Rud., 1809; Dietz, 1910 267 _Echinostoma ilocanum_, Garrison, 1908 267 _Echinostoma malayanum_, Leiper, 1911 268 Sub-family. _Himasthlinæ_, Odhner, 1910 269 Genus. _Artyfechinostomum_, Clayton-Lane, 1915 269 _Artyfechinostomum sufrartyfex_, Clayton-Lane, 1915 269 Family. _Schistosomidæ_, Looss, 1899 269 Genus. _Schistosoma_, Weinl., 1858 269 _Schistosoma hæmatobium_, Bilharz, 1852 270 _Schistosoma mansoni_, Sambon, 1907 277 _Schistosoma japonicum_, Katsurada, 1904 277 Class III. CESTODA, Rud., 1808 282 Anatomy of the Cestoda 284 Development of the Tapeworms 297 Biology 306 CLASSIFICATION OF THE CESTODA OF MAN. Order. _Pseudophyllidea_, Carus, 1863 308 Family. _Dibothriocephalidæ_, Lühe, 1902 308 Sub-family. _Dibothriocephalinæ_, Lühe, 1899 308 Order. _Cyclophyllidea_, v. Beneden 308 Family. _Dipylidiidæ_, Lühe, 1910 309 _Hymenolepididæ_, Railliet and Henry, 1909 309 _Davaineidæ_, Fuhrmann, 1907 309 Sub-family. _Davaineinæ_, Braun, 1900 309 Family. _Tæniidæ_, Ludwig, 1886 309