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Powelliphanta is a genus of large, air-breathing land snails, pulmonate gastropods in the family Rhytididae, found only in New Zealand. They are carnivorous, eating invertebrates, mostly native earthworms. Often restricted to very small areas of moist forest, they are prey to introduced mammalian predators, and many species are threatened or endangered.
Powelliphanta superba is a species of large, carnivorous land snail in the family Rhytididae, which is endemic to the South Island of New Zealand. Five subspecies are recognised, all of which are classified by the New Zealand Department of Conservation as being Nationally Endangered.
Powelliphanta augusta or the Mount Augustus snail, previously provisionally known as Powelliphanta "Augustus", is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. Naturally occurring only on Mount Augustus near Westport on New Zealand's South Island, their entire habitat was destroyed by coal mining. The world population was taken into captivity, in theory until their habitat was restored and they could be released. The mining company concerned went bankrupt and habitat restoration has been unsuccessful, so the species' future is uncertain.
Powelliphanta rossiana, known as Ross' land snail, is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. This species is endemic to the South Island of New Zealand. Subspecies include:
Powelliphanta patrickensis is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. This species is endemic to the South Island of New Zealand. Formerly, it was considered as a subspecies of Powelliphanta rossiana.
Powelliphanta gilliesi, one of the "amber snails", is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
Powelliphanta lignaria, known as one of the amber snails, is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. The eggs of P. lignaria are oval and seldom constant in dimensions 10 × 8.25, 9 × 7.75, 9 × 8, 8.75 × 7.75 mm.
An as-yet-unnamed Powelliphanta species is provisionally known as Powelliphanta "Anatoki Range". It is one of the amber snails. It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This is an as-yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Egmont". It is one of the amber snails, an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
An as-yet-unnamed Powelliphanta species is provisionally known as Powelliphanta sp. from the Baton River. This is one of the amber snails. It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This is a yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Nelson Lakes". This is one of the amber snails. It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. The area above the bush line on Mount Murchison in the Braeburn Range is one of three isolated habitats for this species.
This is a yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Garibaldi". It is one of the amber snails, an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This is a yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Matiri". This is one of the amber snails. It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Haast", is one of the amber snails which is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
Powelliphanta "vittatus", known as one of the amber snails, is an as yet unnamed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
The yet-unnamed Powelliphanta species of amber snails is provisionally known as Powelliphanta "Urewera". It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
Powelliphanta "Lodestone" is a provisional name for an as yet undescribed species of large, carnivorous land snail, an "amber snail", a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This is a yet-unnamed Powelliphanta species, provisionally known as Powelliphanta sp. from Mount Owen. This is one of the amber snails. It is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This is a yet-unnamed Powelliphanta species, provisionally known as Powelliphanta "Kirwans". It is one of the amber snails and is an undescribed species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
The Braeburn Range is a mountain range in the Tasman Region of New Zealand's South Island. It lies to the west of Lake Rotoroa and much of the eastern flank of the range is within the Nelson Lakes National Park. The range runs south-southeast, with a westwards curve at the northern end and several westward-trending spurs.
References
- Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
- Department of Conservation Recovery Plans
- New Zealand Department of Conservation Threatened Species Classification
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