''Clanculus scabrosus'' is a species of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family Trochidae, the top snails.Rosenberg, G. (2012). ''Clanculus scabrosus'' (Philippi, 1850). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=594209 on 2012-11-23

Description

The height of the shell varies between15 mm and 17 mm; its diameter between 14 mm and 16 mm. The thick, solid shell has a false-umbilicate shape. The outlines of the spire are nearly straight. The 6 to 7

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s are planulate, the last often constricted. They are carinate at the periphery. The color of the shell is whitish, longitudinally flammulated with brown. The base of the shell is radiately marked with narrow brown stripes, often broken into tessellations. The sculpture of the shell consists of about four spiral cinguli, of which the middle two are granulose. The upper and lower are wider, smooth or obsoletely granose. The base is convex, with 6 or 7 concentric narrow feebly granose lirae. The interstices are minutely concentrically striate. The oblique aperture is rounded rhomboidal. The outer lip is lirate within. The columella and basal lips are thickened and denticulate. The columella is folded above. The umbilical area is white. The false umbilicus is very narrow, with a spiral sulcus and fold within.H. Pilsbry, Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Trochus scabrosus'')

Distribution

This marine species occurs off India and

Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...

References

* Bosch D.T., Dance S.P., Moolenbeek R.G. & Oliver P.G. (1995) ''Seashells of eastern Arabia''. Dubai: Motivate Publishing. 296 pp

External links

Biodiversity Heritage Library (2 publications)

World Register of Marine Species
{{Taxonbar, from=Q5125719 scabrosus Gastropods described in 1850 Taxa named by Rodolfo Amando Philippi