-4 
BULLETIN OF WISCONSIN NATURAL HISTOEY SOCIETY. VOL. 4. NO. 3. 
avenue; Golden Lake, Waukesha Co.; Little Cedar Lake, Wash- 
ington Co. ; north shore of Lake Winnebago, Calumet Co. 
Kenosha, Airs. Wiswall's list. "Milwaukee, Wis., I. A. Lapham," 
Smith. Misc. Coll. VII, 124. 
52a. Planorbis bicarlnatus striatus Baker. 
Cold Spring Park (fossil), donated by Mr. Monroe. 12660, 
Cold Spring avenue (fossil). "Milwaukee (fossil), C. E. Brown,'' 
Xautilus, XV, 120, original description. 
53. Planorbis ( Planorbella) campanulatus Say. 
Lake Michigan beach at North Point pumping station and near 
Lake Park ; Menomonee river dredgings ; stream near electric 
light plant, Wauwatosa ; Kinnickinnic river, near Eleventh ave- 
nue ; fossil at Cold Spring Park ; mill pond at Delaneld, Okauchee 
and Golden Lake. Waukesha Co. ; Little Cedar Lake, Washington 
Co. ; Crystal Lake, near Elkhart Lake, Sheboygan Co. ; north 
shore of Lake Winnebago, Calumet Co. ; East Twin River, at 
Two Rivers, Manitowoc Co. Kenosha, Mrs. Wiswall's list. 
''Milwaukee, W T is., I. A. Lapham; Aztalan, Wis., S. F. Baird," 
Smith. Misc. Coll., VII, 110. 
Some of the specimens from Golden Lake show the curious 
distortion, due to a second growth after the formation of the first 
aperture, that is so often observed in senile examples of P. trivohis. 
This phenomenon is rather unusual in the present species. 
Planorbis (Menetus) exacutus Say. 
"Milwaukee, Wis., I. A. Lapham," Smith. Misc. Coll., VII, 
128. Our search for this species was unsuccessful. 
54. Planorbis (Gyraulus) hlrsutus Gould. 
Mishicot river (or East Twin river), at Two Rivers, Manito- 
woc Co., not uncommon. 
55. Planorbis Gyraulus parvus Say. 
Mud Creek valley at North Milwaukee ; Menomonee valley, 
opposite Mitchell Park, and at Castalia Park, abundant; Honey 
Creek, near Layton Park; ponds at Howard's prairie and near 
St. Martin's, Town Franklin. 
