''Skenea valvatoides'' is a species of small

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

Skeneidae The Skeneidae are a speciose family of minute to small marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P.; Gofas, S. (2013). Skeneidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php ...

Description

The diameter of the shell attains 3.1 mm. The rather solid, yellowish white shell is narrowly umbilicated. it is opaque, glossy, with a few irregular growth lines. The spire has a rather flattened apex. The suture is deep. 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). Whorls in nature File:Photograph and axial plane floral ...

s are well-rounded. The peristome is considerably expanded.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
(described as ''Cyclostrema valvatoides'' )

Distribution

This species occurs in the Atlantic Ocean at bathyal depths off Portugal.

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 ttobre 1879 Part 3 (1881): 693–724 pl. 61. Part 4 (1881): 922–952 pl. 70-71

882 __NOTOC__ Year 882 (Roman numerals, DCCCLXXXII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. Events By place Europe * January 20 – King Louis the Younger dies in Frankfurt. He ...

Part 5 (1882): 656–687 pl. 49-50 883 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 * Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). ''European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification''. Collection Patrimoines Naturels, 50: pp. 180–213

External links

* valvatoides Gastropods described in 1883 {{Trochoidea-stub