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Quinnia rushi
''Quinnia rushi'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.〔WoRMS (2013). ''Quinnia rushi'' (Dall, 1927). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492440 on 2013-06-10〕
==Description==
(Original description by W.H. Dall) The height of the shell attains 2.6 mm. The small, depressed shell has a trochoid shape. It has about five whorls. The early whorls have one, the later ones two, the last whorl three spiral keels on the anterior one of which the suture is laid. The base of the shell is moderately convex, with a deep funicular umbilicus. It is closely finely spirally threaded, the threads a little coarser near the umbilical margin. In the interspaces between the keels on the spire are very minute close spiral striae. The aperture shows a very shallow sulcus. The outer lip is thin, modified by the sculpture. The columella is short and twisted. Its termination forms a prominent rounded projection hardly to be called a tooth.〔( Dall W. H. (1927). Small shells from dredgings off the southeast coast of the United states by the United States Fisheries Steamer "Albatross", in 1885 and 1886; Proceedings of the United States National Museum, 70(18): 1-134 ) (described as ''Seguenzia rushi'')〕
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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