''Uvanilla buschii'', common name Busch's star shell, is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of sea snail, 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

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Turbinidae Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespec ...

, the turban snails.Bouchet, P. (2012). ''Uvanilla buschii'' (Philippi, 1844). Accessed through:

World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific speciali ...

at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581668 on 2012-09-01

Description

The shell attains a size between 17 mm and 60 mm. The solid, imperforate shell has a conic shape. Its color pattern is olivaceous brown, maculated obscurely above with brown, green or white. The seven

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 flo ...

s are longitudinally costate below the sutures and above the periphery, with two spiral series of tubercles around the middle of the flattened upper surface, or sometimes finely irregularly plicate over the whole upper surface. The periphery is acutely carinated, bearing numerous short compressed triangular radiating spines. The flat base of the shell is densely radiately lamellose-striate, with a strong rib revolving midway between the periphery and the center The

aperture In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An ...

is oblique, pearly white within, transversely ovate, deeply channelled at the periphery. The columellar region is white, strongly bicostate, deeply excavated at the position of the

umbilicus Umbilicus may refer to: *The navel or belly button *Umbilicus (mollusc), a feature of gastropod, Nautilus and Ammonite shell anatomy * ''Umbilicus'' (plant), a genus of over ninety species of perennial flowering plants *Umbilicus urbis Romae The ...

. The parietal callus is not much extended. The operculum is oblong with a submarginal nucleus. The outer surface is white, with a strong curved central rib, its terminations joined by a A-shaped ridge.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
(described as ''Astralium buschii'')

Distribution

This species occurs in the Pacific Ocean from

Mexico Mexico ( Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guate ...

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

References

External links

To World Register of Marine Species
* {{Taxonbar, from=Q7903630 buschii Gastropods described in 1844