Phascolosoma perlucens   Baird  1868 (Marine Worm)
Organism information awaits expert curation
Class: Phascolosomatidea

Trunk 47-61 mm long, thin-skinned and gradually tapering at posterior end. Introvert half to three-fourths the length of trunk, with short digitiform tentacles and 18-21 rows of hooks. Each hook sharply bent at apex forming an obtuse angle with the main axis and provided with accessory tooth, dark bordered central streak and clear triangular area. Papillae large, dark brown, conical, sharply spiniform and posteriorly directed on the postero-dorsal surface of introvert. Longitudinal muscle bands 19-22 and externally visible. Retractor muscles two pairs, ventral pair stouter than the dorsal. Rectum long and without caecum. Spindle muscle attached posteriorly. Fixing muscle single. Nephridia shorter than half the length of trunk and free at their posterior third.

Synonym (s)
Phascolosoma perlucens Baird 1868
Physcosoma dentigerum Shipley 1903
Phascolosoma perlucens Cutler, Cutler and Nishikawa 1984

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Lakshadweep, Minicoy INDIA (Record: 14/12/1979)
• Lakshadweep, Bangaram INDIA (Record: 26/12/1979)
• Lakshadweep, Kavaratti INDIA (Record: 27/03/1984)
• Lakshadweep, Amini INDIA (Record: 13/04/1984)
• Lakshadweep, Kavaratti INDIA (Record: 6/2/1986)
• Lakshadweep, Minicoy INDIA (Record: 18/02/1986)

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

Back to Search