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Information about this family
Especially wanted because of the special Architecture of the shell: indeed, the shell obtains its solidity not because of a solid columella, but by the fine construction of heavy spiral and axial ribs and knobs built up around a broad, hollow umbilicus. Because of this special structure, their lips are rarely perfect. The operculum is often special and shells w/o merit a premium. Most species are small and rare.
Heliacus areola areola