''Mitromorpha iozona'' 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

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

Mitromorphidae Mitromorphidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet, P. (2011). Mitromorphidae Casey, 1904. In: MolluscaBase (2018). Accessed through: World Register of Marin ...

Description

The length of the shell attains 4.6 mm, its diameter 2.5 mm. The shell has biconic shape with a rather acute spire. The overall color is white with yellow dots on the last two or three

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. There is a violet margin on top of the penultimate whorl and below the suture, continuing 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 ...

. The shell contains 7–8 whorls (the apex is broken). The upper whorls are short, convex and with discrete sutures. The shell shows strong longitudinal ribs and two transverse, granose striae below the sutures. The aperture is oblong and narrow. The top of the columella is concave, the middle inflated and with one groove. 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 short and slightly recurved. The outer lip is incrassate below the suture, slightly convex and very oblique. It has a sharp margin with a denticle cin the middle.Hervier, J. "Le genre Columbella dans l’Archipel de la Nouvelle-Calédonie." Journal de Conchyliologie 46 (1899): 305–391
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Distribution

This marine species occurs off

Réunion Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island ...

and in the Indo-Pacific.

References

External links

* * {{DEFAULTSORT:Mitromorpha Iozona iozona Gastropods described in 1899