Schistocomus hiltoni   Chamberlin,  1919 (Marine Worm)
Organism information awaits expert curation
Class: Polychaeta

Size: 24 mm. by 4 mm.

Color: Light yellow with brown spots.

Body swollen and somewhat abruptly truncate in front, tapering backwards to a slender tail. 15 thoracic setigerous segments, about 32 abdominal uncinigerous segments. Prostomium projecting forward as a single hood with rounded anterior corners, devoid of ridges and eyes. Buccal segment broad and short, concave dorsally, ventrally with a lower tip closing the mouth. Buccal tentacles absent.Paleae and postbranchial hoks absent. Four pairs of branchiae of two types. On the first setigerous segment, a pair of outer subulate gills and two inner pinnate gills attached near the middle of the dorsum. On the 2nd and 3rd setigerous segments a broad pinnate gill on each side. On the 5th setigerous segment a transverse, slender, whitish ridge, faintly raised. Uncinigerous pinnules from the 4th setigerous segment, in the thoracic region they bear a small papilla at their upper border, in the abdomen this process becomes cirriform and the dorsal ramus is reduced to a flattened blunt achaetous lobe and a small rounded papilla. The ovate pygidium bears a crown of short cirri. Dorsal capillary setae winged. Uncini with 6 large curved teeth set in a single vertical row.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Tamil Nadu, Tuticorin INDIA
• Tamil Nadu, Chennai Coast INDIA

Literature Source(s)
  • (2001) Sanctuary Asia natural history species: Species checklist: Reptiles Sanctuary Asia Sanctuary Magazine Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) ´╗┐Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at -
  • Fauvel, P (1953) The fauna of India including Pakistan, Ceylon, Burma and Malaya: Annelida, Polychaeta The Indian press ltd., Allahabad 507 pp Available at - NIO, Goa

Page last updated on:2011-04-18

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