35 
SePELÆREUM: 
North America. 
I. SPHÆRIUM SIMILE, Say. 
Smithson. Monogr, 
Canada. 
Maine. 
Vermont. 
New Hampshire. 
Massachusetts. 
Rhode Island. 
Western New York. 
Westchester Co., N. Y. 
Pennsylvania. 
Ohio. 
Michigan. 
.… Wisconsin. 
Iowa. 
Minnesota. 
Alabama. 
Cvclas gigantea, Prime. Franklin Co., Pa, 
Cyclas ponderosa, Prime. Hab. ? 
