28 THE NAUTILUS. 



Astarte castanea, Say. 



Crepidula couvexa, Say. 



Crepidula foriiicata, Linn. 



Crepidula glanca, Say. 



Crepidula plana, Say. 



Colurabella avara, Say. 



Columbella lunata, Say. 



Cytherea convexa, Say. 



Donax fo.ssor, Say. 



Eupleura caudata, Say. 



Fissurella alternata, Say. 



Fulgur canaliculata, Say. 



Fularur carica, Gmel. 



Fulgur perversum, Linn. (Dead.) 



Littorina irrorata, Say. 



Littorina littorea, Linn. (Dead.) 



Littorina palliata, Say. 



Lucina dentata, Wood. 



Modiola plicatula, Lam. 



Modiola tulipa, Lam. (Anglesea.) 



!Mactra solidissima, Chemn. 



]\Iartesia cuneiformis, Say. 



jMelampus bidentatus, Say. 



Mya areuaria, Linn. 



Mytilus edulis, Linn. 



Nassa obsoleta, Say. 



Nassa trivittata, Say. 



Natica duplicata, Say. 



Natica lieros, Sa}'. 



Natica triseriata Say. (young of X. heros.) 



Ostrea borealis, Lam. 



Ostrea virginica, Lister. 



Pandora gouldiana, Dall. 



Pecten irradians, Lam. 



Petricola i)lioladiformis, Lam. 



Pholas crispata, Say. 



Pholas costata, Linn. 



Pholas truncata, Say. 



Raeta canaliculata, Say. 



Solecurtus costatus, Say. 



