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Solariella diomedea
''Solariella diomedea'' is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.〔WoRMS (2012). ''Solariella diomedea'' Dall, 1919. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575367 on 2012-12-03〕〔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 size of the shell varies between 3 mm and 6 mm. The small, white shell has a subglobular nucleus and 3½ subsequent whorls. The deep suture is distinct. The spiral sculpture on the spire consists of four or five equally distributed and subequal small threads with wider interspaces and a narrow flattish space in front of the suture. The intercalary threads appear on the penultimate whorl and on the first half of the body whorl they become numerous, covering the whole surface uniformly, but a little coarser on the verge of the umbilicus which is moderately wide and deep. This sculpture becomes obsolete and the last quarter of the body whorl is perfectly smooth and polished. The axial sculpture colsists of numerous retractively arcuate threads beginning at the suture and extending feebly to the periphery on the upper part of the spire, later becoming obsolete. The base of the shell is rounded. The aperture is subcircular, simple,and sharp. The lips are connected by a glaze on the body and not reflected.〔(W.H. Dall (1919) .Descriptions of new species of Mollusca from the North Pacific Ocean in the collection of the United States National Museum; Proceedings of the United States National Museum v. 56 (1920) )〕
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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