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Charisma latebrosa
''Charisma latebrosa'' is a species of extremely small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.〔Marshall, B. (2013). Charisma latebrosa (Hedley, 1907). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=719411 on 2014-03-12〕
==Description==
The height of the shell is 1.35 mm, its diameter 1.45 mm. The small, buff shell is globose and perforate. The three whorls are flattened beneath the suture, thence rounded to the base. Its sculpture shows about twenty radial puckers that undulate the summit of the body whorl, but disappear before reaching the periphery. Around the umbilicus about a dozen similar radial riblets are disposed. Fine close spiral threads parted by grooves of equal height and breadth ornament the entire surface. The simple aperture is subcircular, slightly angled anteriorly and posteriorly. The umbilicus is deep and narrow. The operculum is externally concave, shelly and multispiral. Its whorls answer to those of the shell, parted by a deep sutural furrow and radially sculptured by irregular raised lines.〔( Charles Hedley, The Mollusca of Mast Head Reef, Capricorn Group, Queensland. Part II; Proceedings of the Linnean Society of New South Wales v. 32 (1907) ) (described as ''Liotia latebrosa'')〕
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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