Munditia meridionalis

Munditia meridionalis is a species of small sea snail, a marine gastropod mollusk, in the family Liotiidae.[1][2]

Munditia meridionalis
Original drawing of a shell of Munditia meridionalis
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Liotiidae
Genus: Munditia
Species:
M. meridionalis
Binomial name
Munditia meridionalis
(Melvill & Standen, 1912)
Synonyms[1]
  • Brookula meridionale (Melvill & Standen, 1912)
  • Cyclostrema meridionale Melvill & Standen, 1912

Description

The height of this minute shell attains 0.75 mm and its diameter 0.50 mm. The delicate, white-gray shell has a depressed trochoidal shape and is deeply umbilicate. it contains 4 whorls. The nuclear whorls are slightly nepionic, and shapelessly turgid, but the penultimate and body whorl are very well sculptured and defined, being acutely spirally bicarinate. The aperture is round. The peristome is continuous. It is slightly thickened at the base around the umbilicus. Around the umbilicus, likewise, a third keel, crenulate, and not so acute, revolves. The dark red-brown operculum is multispiral with a not quite central nucleus. A pale straw-coloured epidermis covers the whole surface uniformly.[3]

Distribution

This species occurs in subantarctic waters off the South Orkney Islands and the South Shetland Islands at depths between 16 m and 18 m.

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References
  1. Bouchet, P. (2013). Munditia meridionalis (Melvill & Standen, 1912). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=197289 on 3 September 2013
  2. Engl W. (2012) Shells of Antarctica. Hackenheim: Conchbooks. 402 pp.
  3. Melvill & Standen (1912), The Marine Mollusca of the Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh. v.48 (1912) (described as Cyclostrema meridionale)
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