Powelliphanta Traversi Florida
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''Powelliphanta traversi'', known as Travers' land snail, is a species of large, carnivorous
land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...
, a terrestrial
pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...
gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000  extant species of molluscs are recognized. The number of fossil species is esti ...
in the family Rhytididae. This species is endemic to the
North Island The North Island, also officially named Te Ika-a-Māui, is one of the two main islands of New Zealand, separated from the larger but much less populous South Island by the Cook Strait. The island's area is , making it the world's 14th-largest ...
of New Zealand between Wellington and Lake Waikaremoana. There are six subspecies, all of which are listed by the New Zealand Department of Conservation as threatened: *''Powelliphanta traversi florida'' Powell, 1946 – ''Nationally Endangered'' *''Powelliphanta traversi latizona'' Powell, 1949 – ''Nationally Endangered'' *''Powelliphanta traversi koputaroa'' Powell, 1946 – ''Nationally Endangered'' *''Powelliphanta traversi otakia'' Powell, 1946 – ''Nationally Critical'' *''Powelliphanta traversi tararuaensis'' Powell, 1938 – ''Nationally Endangered'' *''Powelliphanta traversi traversi'' Powell, 1930 – ''Nationally Endangered'' The eggs are oval and seldom constant in dimensions 10 × 8.75 mm, 9.5 × 8.5 mm, 10 × 8 mm, 11 × 9 mm, 10.75 × 9 mm. O'Connor A. C. (June) 1945. ''Notes on the Eggs of New Zealand Paryphantidae, With Description of a New Subgenus.'' Transactions of the Royal Society of New Zealand, volume 5, 1945-46, page
54
57.


See also

*
List of non-marine molluscs of New Zealand Non-marine molluscs of New Zealand include gastropods, such as land snails, and freshwater molluscs (or shellfish), such as freshwater mussels. Among the best known are the large native forest snails such as the ''Paryphanta'' (kauri snails) and ...


References

{{Taxonbar, from=Q5502096 Powelliphanta Gastropods of New Zealand Gastropods described in 1930 Taxobox binomials not recognized by IUCN Taxa named by Arthur William Baden Powell Endemic fauna of New Zealand Endemic molluscs of New Zealand