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・ Vallois (disambiguation)
・ Vallombrosa Abbey
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・ Vallonia allamanica
Vallonia costata
・ Vallonia cyclophorella
・ Vallonia declivis
・ Vallonia eiapopeia
・ Vallonia enniensis
・ Vallonia excentrica
・ Vallonia gracilicosta
・ Vallonia parvula
・ Vallonia perspectiva
・ Vallonia pulchella
・ Vallonia suevica
・ Vallonia tenuilabris
・ Vallonia, Indiana
・ Valloniidae
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Vallonia costata : ウィキペディア英語版
Vallonia costata

''Vallonia costata'' is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae. 〔 v 〕
==Description==
For terms see gastropod shell
The 1.1-1.6 x 2.2-2.7 mm. shell has 3.2-3.3 whorls. Whorls are slightly angular at the periphery with deep sutures. The shell is flat with regular and widely spaced ribs. The shell is striated between the ribs, the last whorl is descending. The almost circular aperture is oblique (inclined downwards) and in adult specimens broadly reflected.The lip is thickened and reflected.
Like other ''Vallonia'' the umbilicus is very wide. The shell is ivory-white. For differences from ''Vallonia pulchella'' see that species.

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「Vallonia costata」の詳細全文を読む



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