Calliostoma adspersum, common name the spotted Brazilian top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.Rosenberg, G. (2012). Calliostoma adspersum (Philippi, 1851). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532504 on 2012-12-07
Description The length of the shell varies between 16 mm and 28 mm. The conical shell is imperforate, whitish-gray, flammulated with rufous, and encircled by delicate granulate threads. The plane whorls are angulated with a sharp carina a little above the sutures, the last one biangulate with a second carina. The sculpture of the upper surface consists of five, fine thread-like or hair-like granulate spirals, the last forming the sharp carina over the suture. There are in the interstices finer granulose lines. The base of the shell is a little convex with 9 to 10 concentric, little elevated smooth lirae, nearly as broad as their interstices. The aperture is rhomboidal with rounded angles. The oblique columella is cylindrical and subdentate at its base, bounded by a pit at its insertion.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
Distribution This marine species occurs from Colombia to Southern Brazil.
References
External links
Biodiversity Heritage Library (2 publications) Encyclopedia of Life USNM Invertebrate Zoology Mollusca Collection ITIS World Register of Marine Species