3GS 



BuLiMus, Bruguieres. 



lubricus, Brug. Milwaukee. Madison. Sheboygan. 



harpa, Pfeiffer. (Helix harpa, Say.) N. W. Territory, (Mr. Say,) 



Planorbis, Lamarck. 



armigerus, Say. Milwaukee River. Musk ego Lake, 

 biearinatus, Say. Milwaukee Kiver. Four Lakes. Sheboygan, 

 campauulatus, Say. Milwaukee River, Rock, Fourth, and Muskego Lakes. 



Sheboygan.. 

 corpulentus, Say. IST. W. Territory, (Mr. Say.) 



deflectus, Say. Milwaukee and Twin Rivers. Rock, Fourth and Mus- 

 kego Lakes, 

 exacutus, Say. Milwaukee River. 



parvus, Say. Milwaukee and Manitowoc Rivers, Muskego Lake. 

 trivolvis. Say. Milwaukee and Twin Rivers. Muskego Lake. 



LiMKEA, Lamarck. 



caperata. Say. (L. umbilicata Adams.) Milwaukee and ^Manitowoc 



Rivers. Muskego Lake, 

 catascopinn, Say. N. W. Territor3% (Mr. Say.) 

 columella, Say. (L. Macrostoma, Say.) Milwaukee, 

 emarginata. Say. Four Lakes. 



fragilis, Linn. (L. Elodes, Say.) Milwaukee, Manitowoc and She- 

 boygan Rivers. Rock, Muskego and the Four Lakes. 

 gracilis, Say. Milwaukee River. 



jugularis, Say. (L. stagnalis, Kirtland.) Milwaukee, Sheboygan and 

 Twin Rivers. Muskego. Rock, Horricon and Fourth Lakes, 

 megasoma. Say. N. W. Territory, (Mr. Say.) 

 umbrosa, Say. N. W. Territory, (Mr. Say.) 



Phtsa, Draparnaud. 



heterostropha, Say. Milwaukee, Sheboygan and Twin Rivers. Rock L.. 

 elongata. Say. Milwaukee and Manitowoc Rivers. 



Paludina, Lamarck. 



decisa, Say. Milwaukee, Sheboygan and Rock Rivers. 



isogona. Say. 'Rock River. 



subglobosa, Say. N. W. Territory, (Mr. Say.) 



Amnicola, Gould & Haldeman. 



limosa. Say. N. W. Territory, (Mr. Say.) 

 lustrica, Say. Four Lakes. 



Melania, Lamarck. 



depygis, Say. Milwaukee and Sheboygan Rivers, 

 elevata. Say. Milwaukee and Manitowoc Rivers. 



Valvata, Muller. 



tricarinata, Say. Milwaukee River. Rock and Four Lakes. 

 sincera, Say. Milwaukee River. Four Lakes. 



