Murex occa   Sowerby,  1834 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Size: Length 71.70-83.50 mm; diameter 32.60-38.20 mm; length of aperture 22.54-24.26 mm; length of spire 18.13-20.15 mm; length of the canal 32.05-42.40 mm.

Color: Creamy white, aperture white; operculum thin, brown in color with longitudinal depression in middle.

Shell club shaped, protoconch of 2½ whorls, smooth, angulated, earliest whorl of dark color, suture deep, spire elevated, acute, consists of four to five angular whorls, body whorl large, rounded, angulate at shoulder; suture deep; anal sulcus deep, broad, aperture lenticulate, outerlip erect, margin coarsely dentate below shoulder, labial tooth prominent, inner lip adherent, partly detached anteriorly, smooth. Siphonal canal long, straight, open; sculpture consists of three prominent varices, ornamented with spines, axial sculpture represented by two or three ridges in between varices, spiral sculpture consists of three primary foIlowed by secondary and tertiary, primary cords provided with spines. Spines curved upwards, secondary cords with minute spines on varices; interstices of cords with axial ridges marked by tubercles on shoulder region; siphonal canal provided with five to six long spines decreasing in size anteriorly.

Synonym (s)
Murex scolopax Dillwyn, 1817
Murex occa G. B. Sowerby, 1834
Murex occa Sowerby, 1841
Murex occa Reeve, 1845
Murex scolopax Radwin and D'Attilio, 1976
Murex occa Abbott and Dance, 1982
Murex occa Ponder and Vokes, 1988

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Andamans INDIA

Literature Source(s)
  • 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
  • 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
  • Middelfart, P (1996) Egg capsules and early development of ten muricid gastropods from Thai waters Phuket Marine Biological Center Special Publication 16 103-130 Available at - Zoological Records
  • 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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