368 



INDEX. 



O'strea borealis, 



- Canadtnsis, 

 . -- cinnabar i na, . 



- ediilis, 

 -- dongdta, 



- Magelldnica, 



- : -- Virginiana, . 

 -- Virginica, 

 OPTION, 



OUion Cuvierii, . 

 Oxy'noe glabra, 

 Oyster, 



PAGU^RUS, 



Pagurus Bernhardus, 

 --- longicarpus, 

 -- pollicaris, 

 Palsempn vulgaris, 

 PALUDINA, 

 Paludina decisa, . 

 --- limosa, 

 --- porata, 

 Pandalus annulicornis, 

 PANDORA, 

 Panddra nasuta^, 

 ---- trilineata, 

 PANOP^E^A, 

 Panopse^a arctica, 

 Parasitic Worms, 

 Pasithea nigra, . 

 PATELLA, 

 Patella dlveus, 

 --- amatna, 



- apertura, 

 -- Candida, 



- fissurella, 



- fornicata, 



JYoacMna, 



Patelloida testudind.lis, 

 Patdloidea dlveus, 

 -- amatna, 

 PECTEN, 



Pecten concentricus, 

 -- Magellanicus, 

 -- Islandicus, 

 -- Pealii, 

 PECTENHDES, 

 Pectinaria Belgica, . 

 Pectunculus maxirmis, 



-- parvus, . 

 --- subfuscuSy 

 Penella filosa, 

 Penteldsmis anatifera, 

 --- striata, . 

 Pentelepas lavis, 

 PERtSTO'MATA, . 

 PETRICOLA, 

 Petricola dactylus, 



- - - fornicata, 

 --- pholadiformis, 

 PHOLAUA^RIA, 

 PHOLAS, 



Pholas bifrons, . 



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