Anelassorhynchus microrhynchus   (Prashad,  1919) (Marine Worm)
Organism information awaits expert curation
Class: Echiuroidea

Size: Trunk of fully narcotized specimens 15-33 mm long; proboscis 1-3 mm

Color: In the live condition the anterior part of the trunk is somewhat translucent while the posterior part is opaque. The color of the trunk is, in general, grayish white while the proboscis is creamy white.

The proboscis is a rudimentary structure. Its two lateral margins at the proximal end are fused ventrally to form a tubular shape while its distal margins are free and end is truncate. The dorsal surface of the proboscis is smooth while the ventral surface has long furrows but no ciliated groove. Papillae covering the body are most numerous towards the extremities where they are arranged in rings. A small elongated ridge formed by the union of adjacent papillae is observed on the mid-ventral trunk. Circumanal region possesses papillae. Ventral hooks are well developed and their free ends are very broad and curved.

Synonym (s)
Thalassema microrhynchus Prashad, 1919
Anelassorhynchus microrhynchus Fisher, 1946

Common Name (s)
Economic Importance and Threats

Habitat:  Estuarine, Muddy


• West Bengal, Bakkhali INDIA (Record: 07/03/1985, 01/04/1987)
• West Bengal, Basanti INDIA (Record: 25/02/1986)
• West Bengal, Sunderban Tiger Reserve Area INDIA (Record: 06/03/1989)
• Orissa, Chandipur INDIA

Literature Source(s)
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Haldar, BP (1995) Echiura and Sipuncula Estuarine ecosystem series, Part 2: Hugli Matla Estuary ZSI, Calcutta 31-39 Available at - NIO, Goa

Page last updated on:2010-07-29

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