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 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. References Powelliphanta Gastropods of New Zealand Gastropods described in 1930 Taxobox binomials not recognized by IUCN Taxa named by Arthur William Baden Powell Endemic molluscs of New Zealand Endemic fauna of New Zealand