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Uvanilla buschii
''Uvanilla buschii'', common name Busch's star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.〔Bouchet, P. (2012). ''Uvanilla buschii'' (Philippi, 1844). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581668 on 2012-09-01〕〔Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1-82, pls 104-245.〕
==Description==
The shell attains a size between 17 mm and 60 mm. The solid, imperforate shell has a conic shape. Its color pattern is olivaceous brown, maculated obscurely above with brown, green or white. The seven whorls are longitudinally costate below the sutures and above the periphery, with two spiral series of tubercles around the middle of the flattened upper surface, or sometimes finely irregularly plicate over the whole upper surface. The periphery is acutely carinated, bearing numerous short compressed triangular radiating spines. The flat base of the shell is densely radiateiy lamellose-striate, with a strong rib revolving midway between the periphery and the center The aperture is oblique, pearly white within, transversely ovate, deeply channelled at the periphery. The columellar region is white, strongly bicostate, deeply excavated at the position of the umbilicus. The parietal callus is not much extended.
The operculum is oblong with a submarginal nucleus. The outer surface is white, with a strong curved central rib, its terminations joined by a A-shaped ridge. 〔 (G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia ) (described as ''Astralium buschii'')〕
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