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Family  Choriplacidae

Choriplacid chitons


Illustrations of this family
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The family Choriplacidae is known from only one species, Choriplax grayi (A. Adams & Angas, 1864), which is endemic to southern Australia.

Family References

  • Iredale, Tom & Basset Hull, A.F. 1927 Choriplax grayi pp. 89-90 in A Monograph of the Australian Loricates. Royal Zoological Society of New South Wales, Sydney. 168 pp. (This is a consolidated and repaginated version of the same material that was published in sections in The Australian Zoologist over the years 1923-1927).

  • Kaas, P. & Van Belle, R., 1985. Choriplax grayi (H. Adams & Angas, 1864) p. 204-206 in Monograph of Living Chitons Volume 1 E.J. Brill/Dr. W. Backhuys Leiden London Cologne Copenhagen.

  • Gowlett-Holmes, K. (1998). Family Choriplacidae. P. 180 in Beesley, P.L., Ross, G.J.B. & Wells, A. (eds) Mollusca: The Southern Synthesis. Fauna of Australia. Vol. 5. CSIRO Publishing: Melbourne. Part B. viii 565-1234 pp.

  • Gowlett-Holmes, K. 2001. Choriplacidae. p. 44 in Wells, A. & Houston, W.W.K. (eds) Zoological catalogue of Australia. Vol. 17.2 Mollusca: Aplacophora, Polyplacophora, Scaphopoda, Cephalopoda. Melbourne: CSIRO Publishing, Australia.


The only species of the family known from NSW is:


Choriplax grayi (A. Adams & Angas, 1864).

This is a small (up to 30 mm), rare species with reduced valves in a large fleshy girdle. It lives on a red alga to a depth of 20 m is southern Australia. The only NSW specimen known is the holotype, dredged from Watsons Bay, Port Jackson, NSW before 1867. As further specimens have not been collected in NSW in the intervening 150 years, its continuing presence in NSW is regarded as doubtful.


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