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No. Name. 



6G1 Planorbis glabratus Say. 



662 lentus Say. 



663 megasoma De Kay. 



664 obtusa Lea. 



665 obliquus De Kay. 



666 parallelus Say. 



667 regularis Lea. 



668 trivolvis Say. 



669 var. fallax llald. 



670 parvus IlaJd 



671 antrosus Conrad. 



672 lens L,ea. 



673 elevatus Adams. 



674 hirsutus Gould. 



675 virens Adam*. 



676 Physa ancillaria Say. 



677 aurea Lea. 

 67S distorta llald. 



679 elongata Say. 



680 eliptica Lea. 



681 gyrina Say. 



682 heterostropha Say. 



683 Hildrethiaua Lea. 



684 inflata Lea. 



685 microstoma llald. 



686 obesa M#A< /s. 



687 plicata De Kay. 



688 pomilia Conrad. 



689 Sayii Tappan. 



690 Troostiana Lea. 



691 fragilis Mghels. 



692 Lymncea acuta Lea. 



693 apicina L,ea. 



694 appressa Say. 



695 bulimoides Lea. 



696 catasc opium .Say. 



697 caperata Say. 



698 columella Say. 

 C99 coarctata Lea. 



700 casta Lea 



701 chalybaea Gould. 



702 curta Lea. 



703 deciduosa .'viy. 



704 decollata Might Is. 



705 elodes Say. 



Locality. 

 South. Carolina. 

 Ohio. 



New York island. 

 Ohio. 



New York island. 

 Upper Missouri. 

 Western rivers. 

 New York. 

 Massachusetts. 

 Massachusetts. 

 Alabama. 

 Ohio. 



New York. 

 New Bedford. 

 New Bedford. 

 New York. 

 Virginia. 

 Ohio. 



"Western States. 

 Ohio. 

 Georgia. 



Maine to Missouri. 

 Illinois. 

 Virginia. 

 Ohio. 

 Maine. 



New York island. 

 Alabama. 

 Ohio. 



Tennessee. 

 Main.'" 



Philadelphia. 

 Oregon. 



Lake Champlain. 

 Oregon. 

 Middle States. 

 Indiana. 

 Indiana. 

 Newport. R. I. 

 Ohio. 



New York. 

 Ohio. 



New York to Ohio. 

 Portland, Me. 

 ■Western States. 



