Janthina roseola   Reeve,  1858 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda
Order:[unassigned] Caenogastropoda

Color: The portion of the surface above the angular part of the body whorl is pale violet, while the lower flattened part below the angle turns abruptly into a beautiful deep violet color.

The shell is moderate sized, with a more or less flattened basal surface and a markedly angular body whorl. The spire is somewhat low, with considerably depressed whorls. The suture is well marked, but not appreciably sunk below the general surface. The surface of the shell is minutely reticulately striated throughout, but this striation tends to be more strongly marked on the flattened lowest surface of the shell. The aperture is large, somewhat squarish, the lower edge of its columellar margin being rendered strongly angular by the flattening of the lower surface. Numerous shells especially those which have been freshly washed up on the beach and still have the soft parts and float intact, have been collected.

Synonym (s)
Ianthina roseolata Reeve, 1858
Janthina roseola Sowerby, 1882
Ianthina roseolata Crichton, 1941
Janthina roseola Gravely, 1942

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Parangipettai Coast INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Mandapam INDIA

Literature Source(s)
  • Rajagopal, S; Khan, SA; Srinivasan, M and Shanmugam, A (1998) Gastropods of Parangipettai coast Annamalai University 38 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • 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

Page last updated on:2011-03-11

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