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・ Calliostoma normani
・ Calliostoma nudiusculum
・ Calliostoma nudum
・ Calliostoma obesulum
・ Calliostoma occidentale
・ Calliostoma ocellatum
・ Calliostoma opalinum
・ Calliostoma oregon
・ Calliostoma orion
・ Calliostoma ornatum
・ Calliostoma osbornei
・ Calliostoma otukai
・ Calliostoma palmeri
・ Calliostoma paradigmatum
・ Calliostoma paucicostatum
Calliostoma pellucidum
・ Calliostoma penniketi
・ Calliostoma peregrinum
・ Calliostoma perfragile
・ Calliostoma periglyptum
・ Calliostoma pertinax
・ Calliostoma philippei
・ Calliostoma picturatum
・ Calliostoma platinum
・ Calliostoma poppei
・ Calliostoma poupineli
・ Calliostoma problematicum
・ Calliostoma psyche
・ Calliostoma pulchrum
・ Calliostoma punctulatum


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

''Calliostoma pellucidum '', common name the pellucid top shell, is a species of medium-sized sea snail, a marine gastropod mollusc in the family Calliostomatidae, the calliostoma top snails.〔WoRMS (2012). Calliostoma pellucidum (Valenciennes, 1846). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467238 on 2012-12-13〕
==Description==
The height of the shell varies between 29 mm and 50 mm. The solid,conical shell is imperforate. Its color is yellowish with a few brown obliquely longitudinal streaks, and closely minutely dotted with brown and white on the numerous closely beaded lirae which encircle the whorls. These lirae number about 8-10 on the penultimate whorl, and the same number on the last above the periphery. But owing to the frequent intercalation of lirulae between them, the number is subject to variation. Just at or just below the periphery there is a group of lirulae, closer and smaller than those of the upper surface. The rest of the base is regularly granose-lirate. The spire is longer and more elevated than in ''Calliostoma punctulatum'', and more concave in outline. The apex is acute. The sutures are very slightly impressed. There are about nine, flattened whorls. The body whorl is subangular at the periphery. The rhomboidal aperture is iridescent inside. The columellar margin is arcuate, with a slight tubercle at its base.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕

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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