New York. 
Michigan. 
Cyclas elegans, C. B. Adams.  Brattleboro, Vt. 
auctore.) 
4... SPHÆRIUM FABALIS, Prime. 
Smithson. Monogr. 
Connecticut. 
New York. 
Ohio. 
Pennsylvania. 
Michigan. 
Virginia. 
Tennessee. 
Georgia. 
Oregon. 
Cyclas castanea, Prime. Illinois. 
Cyclas sulculosa, Charpentier. Hab.? (Ex auctore.) 
5... SPHÆRIUM OCCIDENTALE, Prime. 
Smithson. Monogr. 
Canada. 
Western New York. 
Manhattan Island, N. Y. 
(Ex 
