NORTH AMERICAN CONCHOLOGY. 



11T 



181 



1S3 



183 

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184 xxiv 



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258 



257 



Arcadae. 



Name. Locality. 



Area pexata Say. 



transversa Say. 



ponderosa Say, e. 1. Southern coast. 



incongrua Say, e. 1. Soutbern coast. 



Nucula tbraciaeformis Storer. 



radiata De Kay. 



proxima Say. 



Gouldi De Kay. 



myalis Couth., e. 1. Nortbern coast. 



limatula Say, e. 1. Maine & Mass. 



sapotilla Gould, e. 1. Nortbern coast. 



navicularis Couth., e. 1. 



tenuis Gould, e. 1. 



minuta Goidd, e. 1. 

 N. tenuisulcata Coutb. 



acuta Conrad, e. 1. Virginia. 



Mytilidae. 



Mytilus borealis Lam. 



M. edulis Gould. 

 notatus De Kay. 

 pellucidus Pennant. 



M. edulis var. jiellucidus 

 incurvatus Lam., e. 1. 



an M. borealis var. ? 

 ungulatus Linn., e. 1. 

 cubitus Say, e. 1. 

 lateralis Say, e. 1. 

 hamatus Say, e. 1. 



M. striatus Barnes, 

 leucopheatus Conrad, e. 

 Modiola plicatula Lam. 



M. semicostata Conrad, 

 modiolus Linn. 



Mytilus modiolus Linn. 



Modiola papuana Lam. 

 pectinula Gould, e. 1. 

 nexa Gould, e. 1. 

 discrepans Montagu, e. 1. 

 discors Montagu, e. 1. 

 Carolinensis Conrad, e. 1. 

 Americana Leach, e. 1. 

 castanea Say, e. 1. 



Gould. 



Nortbern sbores. 



Seacoast. 

 Southern coast. 

 Soutbern coast. 



1. Soutbern coast. 



St. George's b'ks. 

 Massacbusetts. 

 Massachusetts. 

 Massachusetts. 

 Charleston, S. C, 

 Southern coast. 

 Soutbern coast. 



