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・ Calliostoma bullisi
・ Calliostoma canaliculatum
・ Calliostoma carcellesi
・ Calliostoma caroli
・ Calliostoma cheni
・ Calliostoma chesterfieldense
・ Calliostoma chinoi
・ Calliostoma chlorum
・ Calliostoma chuni
・ Calliostoma cinctellum
・ Calliostoma circumcinctum
・ Calliostoma circus
・ Calliostoma cleopatra
・ Calliostoma cnidophilum
・ Calliostoma cochlias
Calliostoma columnarium
・ Calliostoma comptum
・ Calliostoma consimile
・ Calliostoma consobrinum
・ Calliostoma consors
・ Calliostoma conulus
・ Calliostoma coppingeri
・ Calliostoma coronatum
・ Calliostoma crassicostatum
・ Calliostoma cristatum
・ Calliostoma crossleyae
・ Calliostoma cubense
・ Calliostoma debile
・ Calliostoma decipiens
・ Calliostoma dedonderi


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Calliostoma columnarium : ウィキペディア英語版
Calliostoma columnarium

''Calliostoma columnarium'', common name the cape pillar top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Some authors place this taxon in the subgenus ''Calliostoma (Fautor)''
==Description==
(Original description by Hedley & May) The height of the shell attains 8 mm. The rather solid, imperforate shell has a turbinate shape and is angled at the periphery. Its colour is buff. The shell contains 5½ whorls, including a protoconch of a 1½ whorl, which is tilted, malleated, and concluded by a small varix.
Sculpture: three spiral keels appear on the second whorl. As growth proceeds these increase in number but decrease in strength, till at last behind the aperture they are represented by twenty engraved spiral lines extending from the suture to the centre of the base. These are decussated by faint oblique growth lines. The oblique aperture is rhomboidal. The outer lip is simple. The columella thickened. The insertions are joined by a thin callus.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Calliostoma columnarium」の詳細全文を読む



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