''Eucithara arenivaga'' is a small

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 Mangeliidae.WoRMS (2009). Eucithara arenivaga Hedley, 1922. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433688 on 2017-04-29

Description

The shell length varies between 6 mm and 15 mm. (Original description) The solid shell has a biconical shape and is slightly constricted around the upper part of each whorl. It contains 9

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. Its color is lavender-gray, with a broad peripheral band of buff descending the spire, and on the

body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...

underlined by a single or double chocolate line. The lip is buff. The interior is ochraceous brown. The

protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ...

consists of two small helicoid whorls. Sculpture:—The first whorl is keeled, and develops small radial ribs. On subsequent whorls the ribs amount to about ten, not continuous from one whorl to the next, bent, and thickened on the shoulder, thence quickly tapering to the suture, continuing in the opposite direction to the base of the body whorl. The whole shell is over-run by microscopic spiral threads, alternately larger and smaller. Aperture :—The mouth is narrow, oblong, protected by a stout

varix A varix (pl. varices) is an abnormally dilated vessel with a tortuous course. Varices usually occur in the venous system, but may also occur in arterial or lymphatic vessels. Examples of varices include: * Varicose veins, large tortuous veins usua ...

which ascends the previous whorl, and in which is excavated a shallow semicircular sinus. The outer lip has a very narrow free margin, within which are about eight small inconspicuous teeth. The columella is overlaid by a thick callus sheet with a definite margin, across it extend ten plications. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

is a mere notch. Hedley, C. 1922. A revision of the Australian Turridae. Records of the Australian Museum 13(6): 213-359, pls 42-56

Distribution

This marine species occurs off Australia ( Queensland ), and off the Philippines.

References

Tucker, J.K. 2004 ''Catalog of recent and fossil turrids (Mollusca: Gastropoda)''. Zootaxa 682:1-1295.
* * Tantanasiriwong, R. 1978. ''An illustrated checklist of marine shelled gastropods from Phuket Island, adjacent mainland and offshore islands, Western Peninsula, Thailand''. Phuket Marine Biological Center, Research Bulletin 21: 1-22, 259 {{Taxonbar, from=Q10277990

arenivaga ''Arenivaga'' is a genus of sand cockroaches, of the subfamily Corydiinae, in the family Corydiidae. These cockroaches live in sandy soils and dunes in the southwestern United States, Florida and Mexico. ''Arenivaga'' comes from the Latin ''arena ...

Gastropods described in 1922