Home Acknowledgments Conventions Glossary Maps References Links Articles Thumbnails Species list Order Next family	Cylichnidae The family Cylichnidae (listed as Scaphandridae in some sources) includes mostly burrowing species with well calcified shells. A spire may be present or absent and most can withdraw completely into their shells. They may feed on several different taxa including foraminiferans, crustaceans, polychaete worms and other mollusks. At least 16 species are known from Hawaii in five genera (Acteocina, Cylichna, Eocylichna, Roxania (perhaps) and Scaphander). However, only seven species in the genera Acteocina, Cylichna and Eocylichna are likely to be seen at scuba depths. Acteocina hawaiensis Acteocina sandwicensis Acteocina sp. #1 Acteocina sp. #2 Acteocina sp. #3 Cylichna analogia Eocylichna braunsi Eocylichna cf. venustula Roxania(?) calcarea Scaphander alatus Scaphander pustulosus Scaphander takedai
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