Powelliphanta marchanti is a species of land snail in the family Rhytididae. It is endemic to New Zealand. Conservation status Powelliphanta marchanti is classified by the New Zealand Department of Conservation as a species in "serious decline". References Further reading Powell A. W. B. New Zealand Mollusca. William Collins Publishers Ltd, Auckland, New Zealand. 1979. Gastropods of New Zealand Powelliphanta Gastropods described in 1932 Taxobox binomials not recognized by IUCN Taxa named by Arthur William Baden Powell Endemic molluscs of New Zealand Endemic fauna of New Zealand