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''Ceratostoma'', common name the "hornmouth" snails, is a genus of medium to large predatory sea snails, marine gastropod mollusks in the family Muricidae, the rock snails. This genus should not be confused with the nudibranch genus ''Ceratosoma'', meaning "thorn body". ''Ceratostoma'' means "thorn mouth" because of the thorn-like projection on the edge of the aperture, used as a tool in predation to prop open the shells of bivalves and barnacles. ==Species== Species within the genus ''Ceratostoma'' include: * ''Ceratostoma burnetti'' (Adams & Reeve, 1849) * ''Ceratostoma foliatum'' (Gmelin, 1791) * ''Ceratostoma fournieri'' (Crosse, 1861) * ''Ceratostoma monoceros'' (G. B. Sowerby II, 1841) * ''Ceratostoma nuttalli'' Conrad, 1837 * ''Ceratostoma rorifluum'' (Adams & Reeve, 1849) Species brought into synonymy: * ''Ceratostoma inornatum'' (Récluz, 1851) accepted as ''Pteropurpura (Ocinebrellus) inornata'' (Récluz, 1851) accepted as ''Ocenebra inornata'' (Récluz, 1851) * ''Ceratostoma varicosum'' (Kuroda, 1953) accepted as ''Genkaimurex varicosus'' (Kuroda, 1953) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ceratostoma」の詳細全文を読む スポンサード リンク
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