Kochi Prefecture Snail Land Snail Shell Specimen

This is a set of 5 snail specimens from Kochi Prefecture.

The sizes range from 51-16mm.
Some specimens are not in very good condition.

These were gifts.
The empty shell of Awa-maimai appears to be from a unique location, surrounded by the habitats of Kochi snails distributed in the plains to the north and south.
The Setouchi specimens are from geographically distant locations to the east and west.
There is a noticeable difference in shell height.
The Muroto? specimens are all empty shells. The name is marked with a question mark because they are from a location significantly west of the known distribution range. However, the shell characteristics and habitat traits seem to match well.

I am an amateur regarding terrestrial and freshwater snails, so I don't know much detail...

I am listing these after researching them myself, but please feel free to let me know if anything conflicts with laws such as the Law for the Conservation of Endangered Species of Wild Fauna and Flora. Thank you very much for your understanding.