Phascolosoma scolops   (Selenka and de Man)  1883 (Marine Worm)
Organism information awaits expert curation
Class: Phascolosomatidea

Trunk 15-18 mm long, thin-skinned with scattered reddish brown patches. Introvert longer than trunk, with brown irregular bands on the dorsal surface and about 12 filamentous tentacles at its tip. Hooks arranged in 13-16 rows, each hook higher than broad, with curved apex forming an obtuse angle, accessory tooth, clear triangular area and central streak. Papillae tall, conical and densely packed both at introvert base and round the posterior end. Longitudinal muscle bands 19-21 in number. Retractor muscles two pairs, dorsal pair narrower and weaker than the ventral pair. Rectal caecum absent. Spindle muscle attached posteriorly. Fixing muscle single. Nephridia half as long as the trunk and free at their posterior half.

Synonym (s)
Phymosoma scolops Selenka and de Man 1883
Physcosoma scolops Shipley 1903
Phascolosoma scolops Cutler, Cutler and Nishikawa 1984

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Lakshadweep, Agatti INDIA (Record: 24/12/1979)

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Haldar, BP (1991) Sipuncula State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 167-183 Available at - NIO, Goa
  • Sasakic's Web Site Available at -

Page last updated on:08-04-09

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