''Raphitoma oblonga'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Raphitomidae Raphitomidae is a Family (biology), family of small to medium-sized sea snails, marine (ocean), marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families" ...

.MolluscaBase (2019). MolluscaBase. Raphitoma oblonga (Jeffreys, 1867). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1301155 on 2019-11-28

Description

The length varies between 12 mm and 14 mm, and its diameter is between 5 mm and 5.5 mm. The shell has a fusiform shape and a rather high acuminate

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. Spire ...

. The

body whorl The body whorl is part of the morphology (biology), morphology of the gastropod shell, 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 ...

is bulbous. The

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). In nature File:Photograph and axial plane floral diagra ...

s are covered with regular longitudinal ribs forming small reticulations when crossed by the spiral riblets. The

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

is oblong. The short

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 i ...

is slightly bent. The ground color of the shell is dark brown, sometimes with white spots.Locard A. (1891). Les coquilles marines des côtes de France. Annales de la Société Linnéenne de Lyon. 37: 1-385
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Distribution

This marine species occurs in the

English Channel The English Channel, also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busi ...

References

* Dautzenberg, P. & Durouchoux, P. (1913) Les mollusques de la Baie de Saint-Malo (suite). La Feuille des Jeunes Naturalistes, 43(515), 9–16 * Giannuzzi-Savelli R., Pusateri F. & Bartolini S. (2018). A revision of the Mediterranean Raphitomidae (Gastropoda: Conoidea) 5: loss of planktotrophy and pairs of species, with the description of four new species. Bollettino Malacologico. 54, supplement 11: 1-77

External links

Jeffreys J.G. (1862-1869). British conchology. Vol. 1: pp. cxiv + 341 [1862]. Vol. 2: pp. 479 [1864]. Vol. 3: pp. 394 [1865]. Vol. 4: pp. 487 [1867]. Vol. 5: pp. 259

Locard A. (1891). Les coquilles marines des côtes de France. Annales de la Société Linnéenne de Lyon. 37: 1-385

Locard A. (1886). Prodrome de malacologie française. Catalogue général des mollusques vivants de France. Mollusque marins. Lyon, H. Georg & Paris, Baillière : pp. X + 778
*
Biolib.cz: ''Raphitoma oblonga''
{{DEFAULTSORT:Raphitoma Oblonga oblonga Gastropods described in 1867