400 OHIO STATE ACADEMY OF SCIENCE. 
A Few Species Not Recorded from Ohio, Probably or Possibly 
to be Found. 
Hyalina rhoadsi Pilsbry; in various states. 
Hyalina capsella Gould; Kentucky and southern Indiana. 
Philomycus (Pallifera) hemphilli W. G. Binney; Kentucky and 
northern Michigan. 
Vallonia perspectiva Sterki; Indiana, close to the Ohio line. 
Vertigo bollesiana Morse; New York, Michigan, etc. 
Planorbis crista Linné (v. cristatus Drap.); several states. 
Ancylus elatior Haldeman; Kentucky. 
Vivipara sp.; Indiana, etc. 
Lampsilis fatua Lea; Beaver River, Pa. 
Lampsilis obscura Lea; Lower Ohio River. 
Spherium walkeri Sterki; Indiana, Michigan, Canada. 
Pisidium, numerous species known from Indiana, Michigan, 
