40 



BIBLIOGRArHY OF 



Tage. 

 20 



20 



2 i 



2 I 

 2.i 

 20 



20 

 20 



20 

 2" 

 20 

 20 

 20 

 20 

 20 

 20 

 2o 

 20 



20 



Js'ame. Locality. 



Corbula ferruginosa. 



Mya ft rruginosa Wood. 

 Pandora trilineata Say. Found in Nantucket harbor. 



Petricola pholadiformis Lam. Very common. 



P. fornicata Say. 



Sanguinolaria fusca Conrad. 

 Tellina polita Say. 

 Lucina divaricata. 



Asturte castanea Say. 



At Nantucket. 



Found at New Bedford. 



A single valve found at Chatham. 



Ocean shore at Nantucket. 



Astarte. A distinct species, with margins entire. 



Common in Essex County. 



C3 r prina Islandica. 



Venus Islandica L. 

 Venus mercenaria. 



praeparca Say. 



notata Say. 

 Cardium Mortoni Conrad. 



pinnulatum Conrad. 

 Cardita. This species appears to be undescribed. 



Very commou at New Bedford. 



Area ponderosa Say. 

 pexata Say. 

 transversa Say. 

 Nucula margaritacea. 

 N. proxima Say. 

 Area nucleus L. 

 ro strata Montague. 

 X. limatula Say. 



) Found at Smith's point, on the 

 > ocean shore of Nantucket. 

 Not uncommon in Buzzard's Bay. 



Order II. Unimusculosa. 



20 Modiola papuana. 



Mytilus modiolus L. 



2o Mytilus edulis. 

 20 ungulatus. 



20 pellucidus. 



20 incurvatus. 



20 demissus. 



21 Pecten Magellanicus. 

 21 Islandicus (rare). 



P. Pi uli ii Conrad. 

 21 concentricus Say. 



21 Ostrea Virginica. 



21 Anomia ephippium. 

 21 



Very abundant at New Bedford. 

 Rare in Mass., common at Eastport, Me. 



Abundant in New Bedford. 



undulata. Is it a distinct species from the preceding? 



