''Propebela spitzbergensis'' 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 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 e ...

in the

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

Mangeliidae Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. Bouchet, P. (2011). Mangeliidae P. Fischer, 1883. In: MolluscaBase (2016). Accessed through: World Regis ...

Description

The length of the shell varies between 7 mm and 20 mm. (Original description) The characteristics of this species are close to ''

Propebela rugulata ''Propebela rugulata'' (common name : Gould's northern turrid) is a species of sea snail, a marine gastropod mollusc in the family Mangeliidae. Description The whorls are angulated; the axial ribs straight, and not sigmoid. The length of the ap ...

''; the relations between the

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...

and 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 opt ...

, are typical. This species differs, in its

sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...

, in having a more projectant angle, which may occasionally pass into a sharp protuberant edge and in a somewhat more marked spiral striation. The operculum appears to be somewhat broader than the typical one. The teeth of the

radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food ...

have a peculiar recess upon the one side; the form, otherwise, is the broad typical one. Out of 6 specimens examined, all showed the same uniform structure.Friele H., 1877: Preliminary report on the Mollusca from the Norwegian North Atlantic Expedition in 1876; Nyt Magazin for Naturvidenskaberne 23: 1-10, 1 pl.

Distribution

This marine species occurs off

Spitzbergen Svalbard ( , ), also known as Spitsbergen, or Spitzbergen, is a Norwegian archipelago in the Arctic Ocean. North of mainland Europe, it is about midway between the northern coast of Norway and the North Pole. The islands of the group range ...

References

* Bogdanov, I. P. Mollusks of Oenopotinae subfamily (Gastropoda, Pectinibranchia, Turridae) in the seas of the USSR. Nauka, 1990. * Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213

External links

*
Nekhaev, Ivan O. "Marine shell-bearing Gastropoda of Murman (Barents Sea): an annotated check-list." Ruthenica 24.2 (2014): 75
{{DEFAULTSORT:Propebela Spitzbergensis spitzbergensis Gastropods described in 1886