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Stylomiaatophora 24 



Arionidae 24 



Bradybaenidae 24 



Camaenldae 25 



Helicidae 25 



limaci&ae 27 



Philomycidae 28 



Polygyridae 28 



Succineidae 29 



Cephalopoda 29 



Dibranchia . 29 



NEMATHELMIHTKES 29 



Acanthocephala 29 



Echinorhynchoidea 29 



Echinorhynchidae 29 



G-igantorhynchidae 30 



Nenatoda 30 



Hologonia 30 



Trichinellidae 30 



Thelogonia 30 



Acuariidae 30 



Ancyracanthidae 30 



Ascaridae 30 



Chromadoridae 36 



Cruziidae 37 



Cucullanidae 37 



Eilariidae 37 



Heterakidae 37 



Oxyuridae 37 



Physalopteridae 38 



Hhabdiasidae 38 



Seuratidae' 39 



Spiruridae 39 



Strongylidae 39 



Trichostrongylidae 40 



Nematomorpha 40 



Gordioidea 40 



Chordodidae 40 



Gordiidae 40 



MOLLUSC 0IDEA 41 



Brachiopoda 41 



Bryozoa 41 



Kamptozoa 42 



Phoronida 42 



ECHINODERMATA 42 



Asteroldea 42 



Crinoidea 43 



Echinoidea 43 



Holothuroidea 46 



Ophiuroidea 46 



AETEROPOM 47 



Crustacea 47 



Phyllopoda 47 



Cladocera 48 



Ostracoda 49 



(xx) 



