THE NAUTILUS. 23 



Planorbis bicarinatus Say. Milwaukee and vie.; Golden Lake, 

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

 Lake Winnebago. 



'< bicarinatus striatus Baker. Milwaukee (fossil). 

 " campanulatus 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. 

 Planorbis hirsutus Gould. Two rivers, Manitowoc Co. 



" deflectus Say. Vicinity of Milwaukee; Cedar Lake, 



Washington Co.; Two Rivers, Manitowoc Co. 

 " parvus Say. Milwaukee and southwestward. 

 Seymentina armigera Say. Milwaukee and southwestward; Two 



Rivers, Manitowoc Co. 

 Ancylus rivularis Say. Root River, Milwaukee Co. 



" paralellus Raid., 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. 



" gy rl ' nt * 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, Waukeslia Co. 

 ApJexa 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. 

 <k '' parva Lea. Near Milwaukee. 



" " porafa Say. Lake Michigan at Milwaukee. 



" lustrica Pils. Honey Creek near Layton Park, Mil- 



waukee. 



" cincinnatiensisLiQa. Milwaukee and Menomonee rivers; 



Lake Winnebago near High Cliff. 



" euirtrginata Kti -ter. Lake Winnebago near High Cliff. 



