The outer lip$ is moderately thin, showing the external sculpture within.

The outer lip is rendered sinuous by the external sculpture.

It is thin, showing the external sculpture within.

The shell has an external sculpture of many radiating ribs.

The thin outer lip is rendered wavy at the edge by the external sculpture.

The outer lip shows the external sculpture within.

The outer lip is wavy, thin,and shows the external sculpture within.

The outer lip is strongly curved showing the external sculpture within.

The outer lip is rather thick, not showing the external sculpture within.

The outer lip is thin, showing the external sculpture within.