NORTH AMERICAN CONCHOLOGY. 



18Y 



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Ifame. 

 Anodonta fluviatilis Lea. 



Mytilus Jiuviatilus Sol. 



var. Myiilus illitus Sol. 

 A. cataraeta Say. 

 marginata Say. 

 implicata Say. 

 teres Conrad. 

 Pootiana Lea. 

 gibbosa Say. 

 gigantea Lea. 

 glauca Valenc. 

 grandis Say. 



A. corpulenta Cooper. 

 imbecilis Say. 



A. incerta Lea. 

 Newtonensis Lea, 

 Nuttalliana Lea. 

 Oregonensis Lea. 

 ovata Lea. 

 Pepiniana Lea. 

 salmonia Lea. 

 Stewartiana Lea. 

 subcylindracea Lea. 

 suborbiculata Say. 



var. A. Tolundatus Swains. 

 undulata Say. 



A, rugosus Swains. 



var. A. Pennsylvanica Lam. 

 "Wahlamatensia Lea. 

 Wardiana Lea. 



A. virgata Conrad. 



Locality. 

 Hudson river. 



New Jersey. 



New York. 



Massachusetts. 



Connecticut. 



South. Carolina. 



Ohio. 



South Carolina. 



Port Gibson. 



Acapulco. 



Fox river. 



Wabash river and Cin- 

 cinnati. 

 New Jersey. 

 Wahlamat river. 

 Wahlamat river. 

 Marietta. 

 Lake Pepin. 

 Poland, Ohio. 

 Louisiana. 



Oak Orchard cr., N. Y. 

 Illinois. 

 Alton, Illinois. 

 New York. 



Pennsylvania. 

 Wahlamat river. 

 Ohio. 



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Family Cliamacea. 



Chama arcinella Linn. 

 exogyra Conrad. 

 producta JJrod. 



Family Mytilacea. 

 Modiola capaz Conrad. 

 cicercula M(jIL 



Mytilus decussatus Mont, 

 discors f-^inn. 



Mytilus discors Linn. 



lirriijata Gray. 

 Modiola discrepans Lam. 



Florida. 



Upper California. 



Mexico. 



California. 

 Greenland. 



Greenland. 



