THE NAUTILUS. 23 



Planorhis bicarinatus Say. Milwaukee and vie; Golden Lake, 

 Waukesha Co.; Little Cedar Lake, Washington Co., 

 Lake Winnebago. 

 " bicarinatus striatus Baker. Milwaukee (fossil). 



" campanidatus Say. Milwaukee aud vicinity (common ); 



Delafield, Okauchee and Golden Lake, Waukesha Co.; 

 Little Cedar Lake, Washington Co.; Two Rivers, 

 Manitowoc Co.; Crystal Lake near Elkhart Lake. 

 Pfa?wrbis hirsutus Gould. Two rivers, Manitowoc Co. 



" dejiectus Say. Vicinity of Milwaukee; Cedar Lake, 



Washington Co.; Two Rivers, Manitowoc Co. 

 " parvus Say. Milwaukee and southwestwanl. 

 Segmeiitina armigera Say. Milwaukee and south westward; Two 



Rivers, Manitowoc Co. 

 Ancylus rivularis Say. Root River, Milwaukee Co. 



" parahllus Hald., var. St. Martin's, Milwaukee Co. 



" shimeki Pils. Near Wauwatosa, (one shell). 

 Physa sayii Tappan. Milwaukee; Golden Lake, Waukesha Co.; 

 Lake Winnebago near High Cliff. 

 " gyrina Say. Vicinity of Milwaukee and southwestward 

 (abundant;) Sand Ridge Creek near Kenosha; 

 Two Rivers, Manitowoc Co.; Lake Winnebago. 

 " elliptica Lea. Vicinity of Milwaukee. 



" intcgra Haldeman. Milwaukee and vicinity (common;) 

 Golden Lake, Waukesha Co. 

 Aplexa hypnorum Linne. Milwaukee. 



Pleurocera subulare pallidum Lea (?) Lake Winnebago near 

 High Cliff. 

 " elevatum Say. Milwaukee River at Lindwurm. 



Goniobasis livescens Menke. Milwaukee River and Lake Michigan. 

 Amnicola limosa Say. Milwaukee River; Lake Michigan; Lake 

 Winnebago near High Cliff. 

 " '' parva Lea. Near Milwaukee. 



" " porata Say. Lake Michigan at Milwaukee. 



" lustrica Pils. Honey Creek near Lay ton Park, Mil- 



waukee. 

 " cincinncUiensis Lea. Milwaukee and Menomonee rivers; 



Lake Winnebago near High Cliff. 

 '« emarginataJLVteter. Lake Winnebago near High Cliff. 



