Pterynotus pinnatus   (Swainson)  1822 (Sea Snail)
Organism information awaits expert curation
Class: Gastropoda

Size: Length 59.22-66.65 mm; length of aperture 14.48-14.68 mm; length of spire 29.35-31 mm; length of the canal 18.08-21 mm.

Color: White, sometimes with a pale flesh axial stripe on the dorsal side of the varixes.

There are about 10 teleoconch whorls, varixes delicate, sinuous at the margin, wide and usually broadly pointed at the shoulder, anterior canal long, bent to the right and upwardly recurved toward the end, outer lip erect, finely dentate along the inner edge and finely lirate within, columellar lip adherent except anteriorly where it is briefly erect, with one broad intervarical nodule and scaly spiral cords.

Synonym (s)
Murex pinnatus Swainson 1822
Pterynotus alatus Cernohorsky 1974
Murex pinnatus Gravely 1942
Pterynotus pinnatus Cernohorsky 1967
Pterynotus alatus Radwin and D'Attilio 1976
Murex martinianus Pfeiffer 1840
Murex pinnatus Swainson 1822
Purpura alata Roding 1798

Common Name (s)
Economic Importance and Threats



• Andhra Pradesh, Vishakhapatnam INDIA
• Tamil Nadu, Parangipettai INDIA (Record: 1993)
• Andaman and Nicobar Islands, Andamans INDIA (Record: 1993)
• Tamil Nadu, Chennai INDIA (Record: 1993)

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
  • Ganesh, T; Raman, AV and Rao, KVS (2006) New records of marine molluscs from the northeast coast of India, Bay of Bengal Journal of the Bomaby Natural History Society BNHS, India 103(1) 29-33 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Wilson, B; Wilson, C and Baker, P (1994) Australian marine shells 2 1-370 Available at - NIO, Goa
  • Mayhew, R Schooner specimen shells Available at -

Page last updated on:2009-10-16

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