Ischnochiton herdmani   Sykes  (Chiton)
Organism information awaits expert curation
Class: Polyplacophora

Color: Pale pinkish brown; central portion either paler or marked with rusty brown or greenish patches.

Large, long narrow shape and broad girdle; shell narrow and elonagte; the anterior and posterior valves are elegantly ribbed with close-set concentric ridges, the edge of the ridges being coarse and interrupted. The lateral area of the intermediate valves are longitudinally ridged, these ridges appearing as continuations of the concentric ones of the terminal valves. The anterior portion of the posterior valve and the median area of the intermediate valve are traversed by elongated interrupted ridges. Along the centre of the area these ridges become more elongate and much finer. The lateral areas are slightly raised and are demrcated from the central areas by oblique ridge-like elevations. The anterior and posterior terminal valves bear nine slits on their insertion plates. The girdle is broad and carries closely packed overlapping scales.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Krusadai Island (Lat: 9.23) (Long: 79.22) INDIA
• Tamil Nadu, Shingle Island (Lat: 9.23) (Long: 79.23) INDIA

Literature Source(s)
  • Satyamurti, ST (1952) The Mollusca of Krusadai island in the Gulf of Mannar I- Amphineura and Gastropoda Bulletin of the Madras Government 1(2) 265 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2013-01-21

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