28 
‘THE NAUTILUS. 
Astarte castanea, Say. 
Crepidula convexa, Say. 
Crepidula fornicata, Linn. 
Crepidula glauca, Say. 
Crepidula plana, Say. 
Columbella avara, Say. 
Columbella lunata, Say. 
Cytherea convexa, Say. 
Donax fossor, Say. 
Eupleura caudata, Say. 
Fissurella alternata, Say. 
Fulgur canaliculata, Say. 
Fulgur 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. 
Martesia cuneiformis, Say. 
Melampus bidentatus, Say. 
Mya arenaria, Linn. 
Mytilus edulis, Linn. 
Nassa obsoleta, Say. 
Nassa trivittata, Say. 
Natica duplicata, Say. 
Natica heros, Say. 
Natica triseriata Say. (young of N. heros.) 
Ostrea borealis, Lam. 
Ostrea virginica, Lister. 
Pandora gouldiana, Dall. 
Pecten irradians, Lam. 
Petricola pholadiformis, Lam. 
Pholas crispata, Say. 
Pholas costata, Linn. 
Pholas truncata, Say. 
Raeta canaliculata, Say. 
Solecurtus costatus, Say. 
