208 



REFERENCE TO PLATES. 



SPECIES. PAGE 



Area Americana, Gray 179 



Holmesii, Kurtz 179 



incongrua, Say 179 



Pectnnculus peonaceus, Lam ISO 



Myt'lus edulis, Linn 186 



" " 186 



Wacula tennis, Mont 180 



proxhna, Say ISO 



expauwa , Reeve 181 



iuflata, Hancock 181 



delphinodonta, Mighels 181 



Leda tenuisulcata, Couth 181 



Jacksonii, Old 182 



minnta, Fabr 182 



caudata, Donov 182 



acuta, Conr 182 



lirnatula, Say 183 



sapotilla, Gld 1 83 



myalis. Couth 184 



obesa, Stimp 184 



arctica, Gray 184 



thraciseformis, Storer 184 



cascoeusis, Mighela 185 



Mytilus exustns, Linn 186 



hamatus, Say 186 



Modiola modiolus, Linn 186 



plicatula, Lam 187 



Carolinen^is, Conr 187 



tulipa, Linn 187 



Crenella glandula, Totten 1SS 



faba, Fabr 1S9 



nigra, King 189 



discors, Linn 189 



corrugata, Stimp 189 



lateralis, Say 190 



Dreissena leucophsata, Conr 190 



Avicula Atlantica, Lam 191 



Pinna seminnda, Lam 191 



muricata, Linn 191 



Ostrea Virginiana, Lister 192 



borealis, Lam 193 



equestris, Say 193 



Anomia glabra, Verrill 194 



aculeata, Gmelin 194 



Pecten Magellanicus Gmel 195 



Islandicus, Mull lf>6 



irradians, Lam 196 



dislocatus, Say 196 



ornatus, Lam 197 



nodosus, Linn 197 



Lima scabra, Dillw 197 



squamosa, Lam. 197 



eulculus, Leach 198 



Plicatula ramosa, Lam 198 



Terebratulina septentrionalis. Couth 199 



Rhynchonella psittacea, Gmel 199 



Glottidia pyramidata, Stimp 200 



THE END. 



