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Priotrochus kotschyi
''Priotrochus kotschyi'', common name the Kotschy's gibbula, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.〔Gofas, S. (2012). ''Priotrochus kotschyi'' (Philippi, 1849). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=573057 on 2012-11-23〕〔Herbert D.G. (1994). Trochus kotschyi, the first Indian Ocean record of the genus Osilinus (Mollusca: Gastropoda: Trochidae). Journal of Zoology 233:345-357.〕〔Donald K.M., Preston J., Williams S.T., Reid D.R., Winter D., Alvarez R., Buge B., Hawkins S.J., Templado J. & Spencer H.G. 2012. Phylogenetic relationships elucidate colonization patterns in the intertidal grazers Osilinus Philippi, 1847 and Phorcus Risso, 1826 (Gastropoda: Trochidae) in the northeastern Atlantic Ocean and Mediterranean Sea. Molecular Phylogenetics and Evolution, 62(1): 35–45〕
==Description==
The size of the shell varies between 18 mm and 30 mm. The narrowly perforated shell has a conoidal shape. It is whitish-ashen, ornamented with undulating, oblique, radiating chestnut or blackish stripes. The spire is acute. The shell contains 7 whorls. The first whorl is eroded, the remainder are angulated and nodulose above. Above the carina the shell is obliquely nodulose, below the carina spirally lirate with 4 lirae. The body whorl is biangular, convex beneath, and has 7 concentric brown-spotted lirae. The aperture is subquadrate. The white columella is arcuate, sinuous, and below strongly truncate-dentate.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia ) (described as ''Cantharidus kotschyi'')〕
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