Aperture large, oval, much more than half the length of shell. Aperture relatively shorter, about half or less the length of the shell. Sculpture consisting of incremental striations only. Widespread throughout Florida. An amphibious species that is particularly common on mats of floating vegetation such as hyacinths and water-lettuce.
Occasional specimens have a long, slender apex.
Aperture narrow, about half as wide as high. Aperture oval, about 0.75 times as wide as high. Figures 188 and 191. Sparse in occurrence throughout the northern half of the Florida peninsula and panhandle. Most commonly found on algae-covered rocks and logs.