Family LECITHODENDRIIDAE 11 



Family LEPOCREADIIDAE 38 



Family LISSORCHIDAE 39 



Family MICROPHALLIDAE 39 



Family MONORCHIDAE 40 



Family NANOPHYETIDAE 40 



Family NOTOCOTYLIDAE 42 



Family OPECOELIDAE 44 



Family ORCHIPEDIDAE 47 



Family PARAMPHISTOMATIDAE 47 



Family PHILOPHTHALMIDAE 49 



Family PLAGIORCHIIDAE 50 



Family PSILOSTOMIDAE 52 



Family SCHISTOSOMATIDAE 53 



Family SPIRORCHIDAE 55 



Family STEGODERMATIDAE 55 



Family SYNCOELIIDAE 55 



Family ZOOGONIDAE 56 



Digenetic trematodes of uncertain status 56 



Host List 59 



Invertebrate hosts 59 



Fish hosts 62 



Amphibian hosts IZ 



Reptilian hosts 74 



Avian hosts 75 



Mammalian hosts 11 



Bibliography 81 



Pacific Northwest Treniatode Theses 105 



Index 107 



