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Cantharidus caelatus : ウィキペディア英語版 | Cantharidus caelatus
''Cantharidus caelatus'' is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top shells.〔Rosenberg, G. (2012). Cantharidus caelatus Hutton, 1884. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=598215 on 2012-12-04〕 ==Description== It is smaller than ''Cantharidus sanguineus'' (height: 5.5 mm, diameter 4.5 mm) but it is more deeply ribbed and its grooves are wider.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕 The imperforate shell is more deeply ribbed, and the ribs narrower. They number 5 to 7 on the penultimate whorl, 15 to 16 on the body whorl. Sometimes they are obsoletely granose through being crossed by growth lines. The columella shows a slight swelling in the middle.〔( Suter H. (1913-1915), Manual of New Zealand Mollusca; Wellington, N. Z. :J. Mackay, govt. printer,1913-1915 )〕
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