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Calliostomatinae : ウィキペディア英語版 | Calliostomatinae
''Calliostomatinae'' is a subfamily of gastropods, belonging to the family Calliostomatidae.〔(World Register of Marine Species ) Retrieved July 17, 2012〕 ==Description== They are somewhat large sea snails - marine gastropod mollusks, with gills and a thin, circular, corneous, and many-whorled operculum. Their shell is conical with angular periphery. The spiral sculpture consists of raised cords, in many cases strongly beaded. The protoconch has a raised hexagonal pattern. The columella is simple above, not folded, and either simply concave below or slightly truncate and toothed. The radula has the rhachidian and 4 to 5 lateral teeth with irregularly oval body, and rather long, pointed cusps, their outer edges serrate.The inner marginal teeth are enlarged. The pseudo-proboscis of the animal is well developed〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕 〔(McLean J. H. (2012) Detrital feeding in Xeniostoma inexpectans, new genus, new species, and new subfamily Xeniostomatinae of Calliostomatidae (Gastropoda: Vetigastropoda), hosted by hexactinellid sponges of the Aleutian Islands, Alaska. The Nautilus 126(3): 89–97|2012-12-07 )〕
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