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Gibbula multicolor : ウィキペディア英語版 | Gibbula multicolor
''Gibbula multicolor'', common name the multicoloured topshell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. ==Description== The height of the shell attains 6½ mm, its diameter 7 mm. The small, narrowly perforated shell has a conoidal shape with five whorls. The first is whitish-rosy, the following white, with reddish flammules and spots of green and bluish, especially at the ridges. The surface of the whorls is marked with very fine spiral and vertical striae, and 2 elevated carinae. The body whorl contains three keels. The base of the shell is red with a spiral series of green streaks, concentrically striate. The aperture is suboval and smooth within. The columella is white.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕
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