Cypraea (Adusta) onyx adusta   Lamarck,  1810 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Size: Upto 43 mm in length

Shell medium, pyriform, dorsum uniformly dark chestnut brown. extremities, sides and base of deeper shade though not jet black as in typical onyx. Spire deeply umbilicated and three broad transverse zones on the dorsum distinctly separated from one another by two narrow indistinct bands of lighter hue or cream; anterior extremity constricted and slightly margined; dorsal line rather indistinct to obsolete, teeth coarse and reddish brown, but not produced across the base; aperture wide.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Nicobar Islands (Lat: 7) (Long: 93) INDIA
• Lakshadweep (Lat: 8) (Long: 75) INDIA
• Tamil Nadu, Gulf of Mannar (Lat: 8.5) (Long: 79) INDIA
• Andaman and Nicobar Islands, Nicobar 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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-06-18

Back to Search