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・ Arene centrifuga
・ Arene cruentata
・ Arene curacoana
・ Arene echinacantha
・ Arene echinata
・ Arene ferruginosa
・ Arene flexispina
・ Arene fricki
・ Arene guttata
・ Arene hindsiana
・ Arene laguairana
・ Arene lucasensis
・ Arene lurida
・ Arene microforis
・ Arene miniata
Arene olivacea
・ Arene pulex
・ Arene riisei
・ Arene socorroensis
・ Arene stellata
・ Arene substitution pattern
・ Arene tamsiana
・ Arene tricarinata
・ Arene variabilis
・ Arene venustula
・ Areneidae
・ Arenele BNR
・ Arenella
・ Arenenberg
・ Areneo David


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Arene olivacea : ウィキペディア英語版
Arene olivacea

''Arene olivacea'' is a species of sea snail, a marine gastropod mollusk in the family Areneidae.〔WoRMS (2012). ''Arene olivacea''. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=574881 on 2012-12-31〕〔Keen M. (1971) Sea shells of tropical West America. Marine mollusks from Baja California to Perú, ed. 2. Stanford University Press. 1064 pp.〕
==Description==
(Original description by W.H. Dall) The height of the shell attains 5.5 mm and its diameter 6.2 mm. The shell consists of five depressed-turbinate whorls. The suture is narrow but not appressed. The color of the shell is very dark olivaceous, the prominent sculpture paler. The minute nucleus is decorticated, but apparently smooth. The spiral sculpture consists of, on the upper part of the body whorl, four strong elevated cords with wider, almost channeled interspaces. The two posterior cords are more adjacent. On the spire, only three cords are visible. The anterior is more or less undulated. On the base are a single cord, a wide interval, then three more adjacent smaller plain cords, the three close-set beaded cords at the verge, of the small perforate umbilicus. The aperture is circular. The upper lip is produced on the body. The interioris pearly white. (described as ''Liotia olivacea'') 〔Dall, Proc. Biol. Soc. Washington, vol. 31, 1918, p. 7〕

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