Powelliphanta lignaria

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.^[2]

P. lignaria is endemic to the west coast of the South Island of New Zealand. There are seven subspecies,^[3] all of which are listed by the New Zealand Department of Conservation as threatened:^[4]

• Powelliphanta lignaria johnstoni Powell, 1946 – Nationally Endangered
• Powelliphanta lignaria lignaria Hutton, 1888 – Nationally Vulnerable
• Powelliphanta lignaria lusca Powell, 1949 – Nationally Vulnerable
• Powelliphanta lignaria oconnori Powell, 1938 – Nationally Vulnerable
• Powelliphanta lignaria rotella Powell, 1938 – Nationally Endangered
• Powelliphanta lignaria ruforadiata Powell, 1949 – Nationally Endangered
• Powelliphanta lignaria unicolorata Powell, 1930 – Nationally Vulnerable

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