Poecilozonites circumfirmatus (Redfield, 1853)

Lesser Bermuda land snail



Taxonomy & Nomenclature

Synonym/s: Helix circumfirmata Redfield, 1853 (original combination)


Conservation Status

Rediscovered in July 2002

IUCN RedList status: Critically Endangered (Possibly Extinct in the Wild)





Biology & Ecology










Original scientific description:

Redfield, J.H. (1853). Description of new species of Helicidae. Annals and Lyceum of Natural History, New York. 6(4): 14-18.


Other references:

Bieler, R. and Slapcinsky, J. (2000). A case for the development of an island fauna: recent terrestrial mollusks of Bermuda. Nemouria 44: 1-99.

Bouchet, P. and Rocrois, J.-P. (2005). Classification and nomenclator of gastropod families. Malacologia 47(1-2): 1-397.

MolluscaBase eds. (2021). MolluscaBase. Poecilozonites circumfirmatus (Redfield, 1853). Accessed at: on 2022-03-07

Outerbridge, M. E. and Sarkis, S. C. (2018). Recovery Plan for the Endemic Land Snails of Bermuda, Poecilozonites bermudensis and Poecilozonites circumfirmatus. Department of Environment and Natural Resources, Flatts, Bermuda.

Ovaska, K. and Outerbridge, M. (2019). Poecilozonites circumfirmatus. The IUCN Red List of Threatened Species 2019: e.T77149902A77151067. Downloaded on 12 July 2021.

Pearce-Kelly, P. and Walker, C. (2006). Progress report on the conservation breeding programme for the Bermudian land snail Poecilozonites circumfirmatus. Zoological Society of London Report. 7 pp.

Sarkis, Samia. (2009). Recovery Plan for the Bermuda land snail, Poecilozonites circumfirmatus. Department of Conservation Services, Government of Bermuda. 22 pp.


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