MOLLUSCA OF OHIO. 387 
y+Amnicola lustrica Pilsbry. 
Cuyahoga River; Springfield Lake; Ohio Canal at New 
Philadelphia (St.). Probably over the state. 
Amnicola cincinnatiensis (Lea, Cyclostoma). 
Over the state, common in rivers and creeks. 
yAmnicola walkeri Pilsbry. 
Geauga Lake, east of Cleveland! (Allen). 
tAmnicola pilsbryi Walker. 
Meyer’s Lake at Canton, Ohio Canal at New Philadelphia 
(St): 
y+Amnicola nickliniana Lea. 
Springfield Lake. 
yAmnicola emarginata Kuster, obtusa Lea. 
Lake Erie and tributaries; Ohio canal at Navarre and New 
Philadelphia (St.). 
y7Amnicola sp., undescribed, t. Walker. X 
Lake Erie and Ohio Canal in Stark Co. (St.). [The shell is 
small and very slender, very different from all other 
Ohio Amnicole.] 
{Lyogyrus pupoides (Gould, Valvata). 
Springfield Lake (St.). 
VALVATIDA, 
Valvata tricarinata Say. 
Over the state, common in all kinds of waters. Forms with 
one or two keels more or less obsolete are found with 
typical specimens. 
Valvata tricarinata simplex Gould. 
Lake Erie at Sandusky (Walker). 
Valvata bicarinata Lea. X 
I have seen no specimens of the typical form from Ohio. 
Valvata bicarinata depressa Walker. 
Lake Erie at Sandusky and Vermilion (St.). 
Valvata sincera Say. 
= Ohiose 
{Valvata lewisi Currier, striata Lewis. 
Springfield Lake (St.). 
