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Calthalotia baudini : ウィキペディア英語版 | Calthalotia baudini
''Calthalotia baudini'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.〔Marshall, B. (2013). Calthalotia baudini (P. Fischer, 1878). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=719240 on 2014-01-08〕 ==Description== The size of the shell attains 15 mm. The rather thick, imperforate shell has a conic-elongate shape. The 6 to 7 whorls are planulate, the first buff, eroded, the following whitish, ornamented with sparse rosy points and angular chestnut streaks . The shell is spirally lirate, with about 8 lirae on the penultimate whorl. The subangular body whorl is depressed above. The base of the shell is convex, with about 8 concentric lirae. Tnere is no umbilical perforation. The aperture is rhomboidal. The lip is simple. The short columella is subnodose-truncate below. 〔 (Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia ) (described as ''Cantharidus baudini'')〕
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