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Herpetopoma bellum
''Herpetopoma bellum'' is a species of sea snails, marine gastropod mollusc in the family Chilodontidae.〔Rosenberg, G. (2012). Herpetopoma bellum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=598367 on 2012-05-24〕
==Description==
The size of the shell varies between 4 mm and 5.5 mm.
The small, solid, thick shell has a globose-conic shape, evenly grained all over. it is blackish or pink varied with darker. It is imperforate when adult, and has a groove at the place of the umbilicus. The short spire is conic. The apical whorl is smooth, the following whorl has three granose lirae, the next with 3 or 4; the penultimate has 7 or 8 equal, grained lirae. The interstices are narrow. The body whorl has ten such lirae. The teleoconch contains 5 convex whorls. The last one is globose, descending at the aperture. The rounded aperture is nacre with steel-blue and dark red reflections. It is lirate inside. The concave columella terminates in a tooth, below which there is a narrow notch, and another tubercle or tooth on the basal lip equal in size to the columellar denticle.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia ) (described as ''Euchelus bellus'')〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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