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Keywords from Image Description:
Proceedings of the Zoological Society of London Plate Mollusca . Proc Mollusca Soverby liih kiceni Brooks lilK Cylindrella splendida arcLospira grandis Pfr Helx acmella i' mouhoti asc uatoria bougainvmei Pfr apoILo ' Plate Mollusca Illustration biodiversitylibrary org Zoological Society of London Zoological Society