Calliostoma irisans is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.Rosenberg, G. (2012). Calliostoma irisans Strebel, 1905. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532525 on 2012-12-07
Description The height of the shell attains 11 mm. The whitish shell is strongly iridescent, with mainly a purple hue. The 5¾ whorls are barely concave, with the exception of the body whorl. Only the first and the second whorl are granulated. Strebel (1905) Beiträge zur Kenntnis der Molluskenfauna der Magalhaen-Provinz; Jena, Gustav Fischer, 1904-1907
Distribution This marine species occurs off Argentina, the Falkland Islands and the Strait of Magellan
References
External links Biodiversity Heritage Library (2 publications) Encyclopedia of Life World Register of Marine Species