Janthina prolongata [Status Unaccepted]   Blainville,  1822 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda
Order:[unassigned] Caenogastropoda

Image copyrights: Sophie Valtat

Size: Shell height up to 24 mm, aperture height up to 22 mm aperture width up to 13.5 mm.

The deep violet shell is fragile, dextral and globose. The rim of the aperture, with a sinus slightly above the middle, curves regularly. The surface is relatively roughly striated with a fish-bone pattern from the middle of the whorl. The apex is well defined, the body whorl is large, the aperture is wide. A low keel is seen on all whorls. The shell is thin and translucent. The aperture is higher than wide by the long columella. The operculum is absent in adults. The jaws are large, the radula is powerful and has numerous teeth, the central teeth are lacking.

This species is a viviparous, protandric hermaphrodite.

Synonym (s)
Helix janthina Linnaeus, 1764
Janthina decollata Carpenter, 1857
Janthina elongata Blainville in Maravigna, 1838
Janthina globosa Swainson, 1823
Janthina iricolor Reeve, 1858
Janthina nana Gray, 1842
Janthina nitens Menke, 1828
(Junior synonym)
Janthina nitens var. atlantica Morch, 1860
Janthina nitens var. minor Monterosato, 1878
Janthina payraudeaui Locard, 1900
Janthina splendens Monterosato, 1884

Common Name (s)
Economic Importance and Threats

Habitat:  Demersal


• Tamil Nadu, Vedalai INDIA

Literature Source(s)
  • Sundaram, KS; Sarvesan, R; Mohamed, KH and Shanbhogue, SL (1969) Catalogue of molluscs, prawns, stomatopods and marine algae in the reference collections of the central marine fisheries research institute Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 9 1-52 Available at - http://eprints.cmfri.org.in/570/1/Bulletin_9.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Sealifebase Available at - http://www.sealifebase.org/
  • Valtat Available at - http://www.valtat.org/index.html
  • Marine Species Identification Portal Available at - http://species-identification.org/

Page last updated on:2012-11-19

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