NORTH AMERICAN CONCHOLOGY. 



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Name. 



Lymnaea appressa Say. 

 attenuata Say. 

 caperata Say. 



Tar. L. umbilicaia Adams. 

 catascopium Say. 

 L. emarginata Say. 

 var. L. Virgineana Lam. 

 cornea Val. 

 pinguis Say. 

 decollata Mighels. 

 columella Say. 



var. L. acuminata Adams. 

 chalyhea Gould. 

 coarctata Lea. 

 macrostoma Say. 

 desidiosa Say. 

 var. L. acuta Lea. 



PhiladeJphica Lea. 

 elodes Say. 

 elongata Say. 



L. umhroaa Say. 

 expansa IlaJd. 

 ferruginea Ilald. 

 fragilis Linn, (var.) 

 L. palustris Dr. 

 L. speciosa Ziegl. 

 var. L. corviis Parr, 

 gracilis Jay. 



Acclla gracilis Ilald. 

 Grcenlandica. 

 humilis Say. 



var. L. modicella Say. 

 parva? Lea. 

 jugularis Say. 

 Lindsleyi />« A''/y. 

 megasoma Say. 

 Nuttalliana Lea. 

 obrussa Say. 

 pallida Adams. 

 reflexa Say. 



var. L. csilis Lea. 

 Bolida />ea. 

 umbrosa Say. 



var. L. elongata Say. 



Locality. 

 Vermont. 

 Mexico. 

 Ohio. 



New Bedford. 

 New York. 



Virginia. 



Wisconsin. 

 Unity, Maine. 

 Massacliusetts. 

 "Woburn. 

 Cambridge. 

 Rhode Island. 

 Cayuga lake, N. Y. 

 New York. 

 Massachusetts. 

 Pennsylvania. 

 New York. 

 New York. 



Vermont. 

 Oregon. 

 New York. 



Vermont. 



Greenland. 



New York. 



Maine. 



Ohio. 



New York. 



Connecticut. 



N. W. Territory. 



Oregon. 



Philadelphia. 



Lake Champlaio. 



New York. 



Ohio. 



Oregon. 



New York. 



Connecticut. 



