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・ Odostomia aartseni
・ Odostomia aciculina
・ Odostomia acrybia
・ Odostomia acuta
・ Odostomia acutangula
・ Odostomia acutidens
・ Odostomia aepynota
・ Odostomia aequisculpta
・ Odostomia aleutica
・ Odostomia alia
・ Odostomia aliquanta
・ Odostomia altina
・ Odostomia amanda
・ Odostomia americana
・ Odostomia amianta
Odostomia amilda
・ Odostomia angularis
・ Odostomia angusta
・ Odostomia armata
・ Odostomia astricta
・ Odostomia ata
・ Odostomia atossa
・ Odostomia aucklandica
・ Odostomia audax
・ Odostomia avellana
・ Odostomia azteca
・ Odostomia bachia
・ Odostomia baldridgeae
・ Odostomia baranoffensis
・ Odostomia barashi


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Odostomia amilda : ウィキペディア英語版
Odostomia amilda

''Odostomia amilda'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.〔Rosenberg, G. (2011). ''Odostomia amilda'' Dall & Bartsch, 1909. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581096 on 2011-10-26〕 〔Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN 1-888569-01-8. IX, 526 + cd-rom pp.〕
==Description==
The ovate shell is transparent. Its length measures 2.6 mm. The whorls of the protoconch are deeply immersed in the first of the succeeding turns, above which only the tilted edge of the last whorl projects. The four whorls of the teleoconch are well rounded, slightly contracted at the sutures, and somewhat shouldered at the summits, the first marked by four slender equal and subequally spaced incised spiral lines: the first are marked by a strongly incised groove a little below the summit which causes this to appear bounded by a well-rounded cord; The periphery of the body whorl is well rounded, the base somewhat inflated, well rounded, slightly attenuated anteriorly, marked by numerous exceedingly small microscopic spiral striations and three well incised equally spaced lines on the anterior half. The aperture is oval, somewhat effuse anteriorly. The posterior angle is obtuse. The outer lip is thin, showing the external sculpture within. The columella is slender, decidedly curved, somewhat reflected, reinforced by the base. The columella is provided with a strong fold at its insertion. 〔 ( William Healy Dall and Paul Bartsch , "A Monograph of West American Pyramidellid Mollusks" , Smithsonian Institution, 1909 ) 〕

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