APPENDIX ON TREMATODA AND NEMATODA 753 TREMATODA 753 _Artyfechinostomum sufrartyfex_ 753 _Metagonimus_ (_Yokogawa_) _yokogawai_ 753 _Opisthorchis sp._ 753 _Schistosome cercariæ_ 753 _Distomata cercariæ_ 753 Group. _Ferrocercous cercariæ_ 753 Family. _Schistosomidæ_ 753 _Cercaria bilharzia_, Leiper, 1915 754 _Cercaria bilharziella_, Leiper, 1915 754 _Schistosoma mansoni_, Sambon, 1907 754 NEMATODA 754 Ancylostomiasis 754 Ground Itch 754 _Ascaris lumbricoides_ 754 Filariasis 755 _Onchocerca volvulus_ 755 _Strongyloides stercoralis_ 755 BIBLIOGRAPHY 756 INDEX 836 LIST OF ILLUSTRATIONS. FIG. PAGE