Genus Hiatella 49 



Hiatella arctica 49 



Hiatella striata 50 



Genus Panomya 50 



Panomya arctica , 50 



Family Pholadidae 50 



Genus Barnea 50 



Barnea truncata 50 



Barnea sp 51 



Genus Xylophaga 51 



Xylophaga atlantica 51 



Subclass Anomalodesmata 51 



Order Pholadomyoida 51 



Family Pandoridae 51 



Genus Pandora 51 



Pandora bushiana 51 



Pandora gouldiana 51 



Pandora inflata 51 



Pandora inornata 52 



Pandora trilineata 52 



Pandora sp 52 



Family Lyonsiidae 52 



Genus Lyonsia 52 



Lyonsia arenosa 52 



Lyonsia hyalina 53 



Lyonsia sp 53 



Family Periplomatidae 53 



Genus Periploma 53 



Periploma affine 53 



Periploma fragile 53 



Periploma leanum 54 



Periploma papyratium 54 



Periploma sp 54 



Family Thraciidae 55 



Genus Thracia 55 



Thracia conradi 55 



Thracia myopsis 55 



Thracia septentrionalis 55 



Family Poromy idae 56 



Genus Poromy a 56 



Poromy a sp 56 



Family Cuspidariidae 56 



Genus Cardiomya 56 



Cardiomya perrostrata 56 



Genus Cuspidaria 56 



Cuspidaria glacialis 56 



Cuspidaria obesa 57 



Cuspidaria parva 57 



Cuspidaria pellucida 57 



Cuspidaria rostrata 57 



Cuspidaria sp 57 



Genus Plectodon 58 



Plectodon sp 58 



Family Verticordiidae 58 



Genus Lyonsiella 58 



Lyonsiella abyssicola 58 



Lyonsiella sp 58 



Genus Verticordia 58 



Verticordia ornata 58 



Acknowledgments 58 



Literature cited 59 



Alphabetical index 64 



