''Uvanilla unguis'' 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 Turbinidae, the turban snails.Bouchet, P. (2012). ''Uvanilla unguis'' (W. Wood, 1828). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=579276 on 2012-09-01

Description

The size of the shell varies between 20 mm and 40 mm. The solid, imperforate shell has a conic shape. With a color pattern of brown or gray. The conic spire is acute. The spire contains six

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. Those above are very obliquely striate and flattened, longitudinally inegularly plicate, sharply carinated at the periphery and produced into radiating compressed truncated digitations. The base of the shell is flat or concave, concentrically regularly and finely lirate,

lira Lira is the name of several currency units. It is the current currency of Turkey and also the local name of the currencies of Lebanon and of Syria. It is also the name of several former currencies, including those of Italy, Malta and Israe ...

e number about seven, radiately densely, finely lamellose-striate. The interior aperture is very oblique, and angular at periphery, its lower margin nearly straight. The interior of the aperture is silvery. The oblique columella is slightly concave, and excavated at the position of the umbilicus, with a spiral white rib. The parietal callus covers over half the base of the shell. The operculum is white outside, excavated on each side of a strong granulose curved central rib, with the terminations connected by a shorter ridge curved in the opposite direction.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
(described as ''Astralium unguis'')

Distribution

This species occurs from the Gulf of California, Western Mexico to Panama

References

External links

To World Register of Marine Species
* {{Taxonbar, from=Q7903634 unguis Gastropods described in 1828 Taxa named by William Wood (zoologist)