382 OHIO STATE ACADEMY OF SCIENCE. 



Lymnaea reflexa Say. 



Cincinnati; Lockland, Hamilton Co.; Sandusky; La Grange, 

 Lorain Co. (Walker) ; Cleveland (Allen) ; Garrettsville. 

 Lymnaea reflexa kirtlandiana Lea, exilis Lea? 



Cincinnati ; Cuvahoga Co. ! (Allen) ; pond near Congress Lake 

 (Walker);' Poland (Walker); Tuscarawas Co. (St.). 

 Regarded as distinct by some conchologists. 

 Lymnaea columella Say. 



Over the state, common. 

 Lymnaea columella chalybea Gould. 



Kent, Portage Co. (Walker). 

 Lymnaea catascopium Say. 

 Cincinnati; Lake Erie. 

 Lymnaea desidiosa Say, obrussa Say, t. Baker. 



Over the state, common and very variable. 

 fLymnaea desidiosa modicella Say. 



Summit, Stark and Tuscarawas Counties (St.) ; Hiram, 

 Portage Co. (Streater, Walker); Circleville (Walker). 

 Probably over the state. 

 Lymnaea humilis Say. 



Over the state, common and variable; often out of water, 

 on damp ground. Probably this Lymnasa was found, 

 common, on flower pots, in a greenhouse at Painesville 

 (St.). 

 Lymnaea humilis var - — , t. Baker (unnamed). 



New Philadelphia (St.), with strongly malleate surface and 

 open umbilicus. 

 fLymnaea sterkii Baker X 



Near Dover, Cuyahoga Co. (St.). 

 fLymnaea parva Lea. 



Summit, Tuscarawas, Franklin, Butler, Auglaize and 

 Defiance Counties (St.). Probably all over the state, 

 but overlooked until recently. 

 Lymnaea caperta Say. 



Cuyahoga Co.! (Allen); Elyria (Walker); common in 

 Portage, Summit and Stark Counties, rare in Tusca- 

 rawas Co. (St.). It is listed in none of the Cincinnati 

 catalogues. 

 Ljmnaea haldemani Deshayes, gracilis Jay. X 



Sandusky Bay (Walker) ; cited from Congress Lake. 

 Planorbis glabratus Say. X 



Cincinnati (Harper and Wetherby). 

 Planorbis trivolvis Say. 



Over the state, common and variable. A specimen of 26 

 mill. diam. was found in the Nimishillen Creek, at 

 Canton (St.). 



