Baker—The Fauna of The Lake Winnebago Region, 135 
ViVAPARIDAE 
Liliplax subcarinata (Say). Lakes Winnebago and Butte des Morts, and 
Omro, Fox Eiver, common. 
Campeloma rufum (Haldeman). Same localities as above. 
Physidae 
Fhysa sayii Tappan. Lake Winnebago and Butte des Morts, common. 
These Physas are smaller than sayii from other localities, especially river 
habitats, and may be the result of a lake environment, as has been the case 
with so many other lake forms herein listed. 
Fhysa integra Haldeman. Terrell’s gravel pit, near Lake Butte des Morts, 
in small stream flowing from artiflcial pond. Bare. 
Fhysa integra hillingsi Heron. The Lake Winnebago and Butte des Morts 
specimens of integra seem referable to hillingsi. Common. 
Fhysa gyrina hildrethiana Say. Swale half mile north of Oshkosh. 
Fhysa gyrina oleacea Tryon. Summer-dry pond in woods on Plummers 
Point, near Lake Butte des Morts. Abundant. 
Aplexa hypnorum (Linn.). Swale half mile north of Oshkosh. 
Planorbidae 
Flanorhis trivolvis Say. Omro, Fox Eiver, among vegetation, common. Lakes 
Butte des Morts and Winnebago in protected situations. 
Flanorhis trivolvis fallax Haldeman. Lakes Winnebago and Butte des Morts. 
In more exposed situations than typical trivolvis. 
Flanorhis trivolvis pseudotrivolvis Baker. Lake Winnebago and Butte des 
Morts in marshy places. Listed as Flanorhis glahratus by Andrews (1915, 
p. 200). 
Flanorhis truncatus Miles. Lakes Winnebago and Butte des Morts. The 
most abundant Planorbis in the lake. 
Flanorhis campanulatus Say. Lakes Winnebago and Butte des Morts, com¬ 
mon. 
Flanorhis antrosus Conrad. Same localities as above. Abundant only in 
places. 
Flanorhis antrosus striatus Baker. Same localities. The majority of the 
antrosus are referable to the striate form. 
Flanorhis deflectus Say. Lakes Butte des Morts and Winnebago, common. 
Flanorhis exaeuous Say. Same localities as above, not common. 
Flanorhis parvus Say. Common in the two lakes. Eare at Omro, Fox Eiver. 
Flanorhis umhilicatellus Ckll. Shallow pool under railroad bridge on shore 
of Lake Butte des Morts, north of Oshkosh, rarej swale north of Oshkosh, rare; 
pool on Plummers point, in woods. Lake Butte des Morts, common. The first 
record for Wisconsin. 
Segmentina armigera (Say). Small pool beneath railroad tracks north of 
Oshkosh on shore of Lake Butte des Morts, not common. 
