The parietal wall is provided with a thin callus.

Across the body there is no pad, but the shell is eroded, which looks like a thin callus.

The parietal wall is closed by a very thin callus.

The parietal wall is covered by a thin translucent callus.

The columella and the parietal wall are curved showing a thin, yellowish-white callus.

The parietal wall is glazed with a very thin callus.

The peristome is reflected, connected in most cases by a thin callus.

The ends of the peristome are connected with a thin callus.

The inner lip is smooth with a thin callus.

The peristome is simple, its margins joined by a very thin callus.