''Gymnobela fulvotincta'' 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

Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". ''Malacologia'' 47(1-2). . 39 ...

Description

The length of the shell attains 33 mm, its diameter 13 mm. The spire of the rather solid shell is composed of 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, separated by a well marked suture. The whorls of 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 ...

consist of curved longitudinal ribs and are, at the bottom, finely reticulated. A little below the middle of the subsequent whorls, occur a series of longitudinal, tuberculous plicae. These tubercles are protruding, rounded, very regularly arranged and give the whorls a streamlined appearance. There are 15 plicae on the penultimate whorl, 20 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 ...

These plicae do not extend to the suture. On the body whorl however, they continue downward in an obsolete manner. The infra-sutural zone, is wide, sloping, with very arched growth lines, a little more developed close to the suture. The whole surface, with the exception of the infra-sutural zone, is crossed by small, thin, and regular growth lines, a little less wide than their intervals. The aperture is elongated, angular at the apex, attenuated at the base where it is prolonged into a mediocre, well open and not reflected

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 ...

. The columella is very slightly twisted. The outer lip is simple, arched and is broadly, but not deeply indented at the top.Dautzenberg P. & Fischer H. (1896). Dragages effectués par l'Hirondelle et par la Princesse Alice 1888-1895. 1. Mollusques Gastéropodes. Mémoires de la Société Zoologique de France. 395-498, pl. 15-22
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Distribution

This marine species occurs off the Azores and the

Cape Verdes , national_anthem = () , official_languages = Portuguese , national_languages = Cape Verdean Creole , capital = Praia , coordinates = , largest_city = capital , demonym ...

References

* Sysoev A.V. (2014). Deep-sea fauna of European seas: An annotated species check-list of benthic invertebrates living deeper than 2000 m in the seas bordering Europe. Gastropoda. Invertebrate Zoology. Vol.11. No.1: 134–155 * 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

*
Bouchet & Warren, Revision of the North-East Atlantic bathyal and abyssal Turridae (Mollusca, Gastropoda); The Journal of Molluscan Studies, supplement 8, December 1980
{{DEFAULTSORT:Gymnobela Fulvotincta fulvotincta Gastropods described in 1896