Morula marginatra   Blainville,  1832 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Size: Length 19.32-27.30 mm; diameter 12.90-16.60 mm; length of aperture 12.55-16.60 mm; length of spire 10.40-13.35 mm.

Color: Greyish with white horizontal lines in middle on body; aperture light violet with dark chocolate brown lines inside, teeth white, margin chocolate brown.

Shell pyramidally fusoid, spire elevated, acute, consists of four angulated whorls. Body whorl large, ovate, suture distinct aperture narrowly ovate. Outer lip margin crenulate, thick, interior denticulate with four prominent teeth leading to raised lines, inner lip smooth, adherent, plicated middle, canal short, broad, open, sculpture consists of longitudinal ribs broken to squarose tubercles by revolving scabrous cords interstices formed into deep pits. Body whorl with four to five rows, spiral whorls have two rows each.

This species closely resembles Morula granulata but differs in having deep pits and broader aperture.

Synonym (s)
Purpura marginatra Blainville, 1832
Purpura cancellata Kiener, 1836
Purpura atromarginata Blainville, 1847
Sistrum squamosum Pease, 1868
Ricinula (Sistrum) marginatra Tryon, 1880
Drupa atromarginata Tikader, 1964
Morula marginatra Cernohorsky, 1987

Common Name (s)
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
• Daman and Diu, Goghla INDIA
• Gujarat, Dwarka INDIA
• Gujarat, Porbandar INDIA
• Gujarat, Veraval INDIA
• Daman and Diu, Diu Fort INDIA
• Arabian Sea INDIA
• Andaman and Nicobar Islands, Mus Jetty INDIA
• Andaman and Nicobar Islands, Andamans 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
  • Subba Rao, NV and Surya Rao, KV (1993) Contribution to the knowledge of Indian marine molluscs: Pt. 3. Family: Muricidae Occasional paper no 153 Records of the Zoological Survey of India ZSI, Kolkata 133 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-07-09

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