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:Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd., Auckland, New Zealand 1979 Powelliphanta rossiana fletcheri Powell, 1938 – Range Restricted Powelliphanta rossiana, subspecies "Fox" Powelliphanta rossiana gagei Powell, 1938 – Nationally Critical Powelliphanta rossiana rossiana Powell, 1930
The eggs are oval and seldom constant in dimensions 8 × 6.75, 6.5 × 5.75, 8.25 × 6.75 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, pages 54–57.
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