Tonna cepa   Roeding,  1798 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Image copyrights: Seashell Shack

Size: 12 cm.

Color: Light yellow-brown, darker on the ribs than in the grooves, with brown and white blotches at the sutures, deep interior yellow becoming white near the margin.

Thin, spire with three smooth nuclear whorls and widely and deeply channelled suture, postnuclear whorls (about five) sculptured with wide low spiral ribs (about 17 on the body whorl) separated by narrow grooves, posterior ribs on the body whorl flat, anterior ribs rounded, columella vertical, almost straight, reflected over a deep umbilicus, anterior fasciole broad but low, anterior canal notch wide, shallow, oblique.

Synonym (s)
Cadus cepa Roeding, 1798
Tonna olearium Bruguiere, 1789

Common Name (s)
• Channeled Tun
Economic Importance and Threats



• Andaman and Nicobar Islands, Andaman (Lat: 10) (Long: 93) INDIA
• Andaman and Nicobar Islands, Nicobar Islands (Lat: 7) (Long: 93) INDIA
• Tamil Nadu, Gulf of Mannar INDIA

Literature Source(s)
  • Subba Rao, NV (2003) Indian seashells Records of the Zoological Survey of India ZSI, Kolkata (Part 1) 416 pp Available at - NCL, Pune
  • Apte,D (1998) The book of Indian shells Oxford University Press 115
  • Subba Rao, NV and Dey, A (2000) Catalogue of marine molluscs of Andaman and Nicobar Islands Occasional paper no 187 Records of the Zoological Survey of India ZSI 1-323 Available at - NCL, Pune
  • OBIS Indo-Pacific molluscan database Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Wilson, B; Wilson, C and Baker, P (1993) Australian marine shells 1 1-408 Available at - NIO, Goa
  • Seashell Shack Available at -
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -

Page last updated on:2010-08-06

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