Entemnotrochus rumphii

Entemnotrochus rumphii, common name the Rumphius' slit shell, is a species of large sea snail with gills and an operculum, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.[2]

Entemnotrochus rumphii
A shell of Entemnotrochus rumphii
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Vetigastropoda
Superfamily:
Pleurotomarioidea
Family:
Pleurotomariidae
Genus:
Entemnotrochus
Species:
E. rumphii
Binomial name
Entemnotrochus rumphii
(Schepman, 1879) [1]
Synonyms[2]
  • Entemnotrochus urashima Shikama & Oishi in Shikama, 1977
  • Pleurotomaria rumphii Schepman, 1879 (basionym)
  • Pleurotomaria (Entemnotrochus) rumphii

Distribution

This marine species occurs off Japan, Taiwan and the Philippines.[3]

Description

The width of this large gastropod shell is 130–285 mm.[3] The shell has a broadly conoid shape with a convex base. It is moderately umbilicated, the umbilicus penetrating to the apex. It is a little plicated within by the prominent growth lines. The color is yellowish-white, with flames of orange or carmine red, and light violet, particularly developed on the body whorl. The apex is eroded and yellow. The number of whorls is uncertain, probably between 11 and 13. The whorls are visibly convex and divided into nearly equal portions by the slit fasciole, which is a little above the middle. The sculpture is composed of oblique, radiating striae, more prominent on the upper whorls. The base of the shell is almost smooth, with a slight stride of growth and very fine concentric lines. The nacreous aperture is obliquely quadrangular. The basal margin is continuous with the columella, and is not angulated at its junction with it.[4]

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References
  1. Schepman, Tijdschrift der Ned. Dierk. Vereen, iv, p. 163, 1879.
  2. Bouchet, P. (2011). Entemnotrochus rumphii (Schepman, 1879). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467983 on 2011-04-03
  3. http://gastropods.com/5/Shell_905.shtml accessed 17 June 2009.
  4. G.W. Tryon (1890), Manual of Conchology vol. XII (described as Pleurotomaria rumphii)
  • Crosse, Journal de Conchyl. xxx, p. 8, 1882.
  • Sowerby, Thes. Conch, v, p. 185, t, 490, f. 1, 2.
  • "Entemnotrochus rumphii". Gastropods.com. Retrieved 16 January 2019.
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