''Anekes affinis'' 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 ...

, unranked in the

superfamily SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...

Seguenzioidea Seguenzioidea is a family (biology), superfamily of sea snails, marine (ocean), marine gastropod mollusks in the clade Vetigastropoda.Gofas, S. (2010). Seguenzioidea. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database ...

Description

The shell grows to a height of 1.5 mm. The rather thin, white shell is narrowly umbilicated. It is semitransparent glossy and lacks any

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 ...

, The four

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 swollen and rapidly increasing. The periphery is simple and acute. The suture is narrow but deep.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
(described as ''Cyclostrema affinis'')

Distribution

This species occurs in the

Mediterranean Sea The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...

References

* Jeffreys J. G., 1878-1885: On the mollusca procured during the H. M. S. "Lightning" and "Porcupine" expedition; Proceedings of the Zoological Society of London; Part 1 (1878): 393-416 pl. 22–23. Part 2 (1879): 553-588 pl. 45-46 ctober 1879 Part 3 (1881): 693-724 pl. 61. Part 4 (1881): 922-952 pl. 70-71

882 __NOTOC__ Year 882 ( DCCCLXXXII) was a common year starting on Monday of the Julian calendar. Events By place Europe * January 20 – King Louis the Younger dies in Frankfurt. He leaves his territory to his younger brother, Emperor ...

Part 5 (1882): 656-687 pl. 49-50

883 __NOTOC__ Year 883 ( DCCCLXXXIII) was a common year starting on Tuesday of the Julian calendar. Events By place Europe * Spring – Viking raiders ravage Flanders, and sack the abbey at Saint-Quentin. King Carloman II blocks thei ...

Part 6 (1883): 88-115 pl. 19–20. Part 7 (1884): 111-149 pl. 9–10. Part 8 (1884): 341-372 pl. 26–28. Part 9 (1885): 27-63 pl. 4-6

External links

Serge GOFAS, Ángel A. LUQUE, Joan Daniel OLIVER, José TEMPLADO & Alberto SERRA (2021) - The Mollusca of Galicia Bank (NE Atlantic Ocean); European Journal of Taxonomy 785: 1–114
* {{Taxonbar, from=Q4761612 affinis Gastropods described in 1883