Anelassorhynchus inanensis   (Ikeda,  1904) (Marine Worm)
Organism information awaits expert curation
Class: Echiuroidea

Body is generally grey, posterior end pale grey in color. Body 15-35 mm in length and 14-15 mm across the broadest part. Proboscis is 15-16 mm in length and 10 mm at the broadest part. Body wall is thick and covered with flattened papillae of irregular outline. Also there are transverse wrinkles in the body wall. The proboscis is greyish white in color, its lateral margins folded inwards to make it tubular in appearance. Proximal ends of the lateral margins are united. Ventral hooks are very small and light brown in color. Genital apertures are distinguishable externally.

Internally, the foregut appears to be in a highly contracted state. Intestine is held in position by what appear to be innumerable mesenterial strands from the body wall; these are particularly many which emerge from the ventral body wall to attach with the intestine at the junction of the foregut and the siphonal gut. Siphonal intestine and hindgut long. Ring sinus is narrow, neuro-intestinal vessel branches into before opening into the ring sinus. A rectal caecum is present. Gonoducts 3 pairs and oval in shape; gonostome basal, gonostomal lips drawn into two spirally coiled filaments. Gonoducts are located close to the anterior end, first pair located anterior to the ventral hooks. Anal vesicles are two long brown tubes about 3/4th of the length of the trunk. The tubular vesicles are swollen at some places.

Synonym (s)
Thalassema inanensis Ikeda, 1904
Anelassorhynchus inanensis Stephen and Edmonds, 1972

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated


• Lakshadweep, Kavaratti INDIA

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Haldar, BP and Dattagupta, AK (1991) Echiura State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 185-197 Available at - NIO, Goa

Page last updated on:2010-07-29

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