Powelliphanta rossiana gagei, known as one of the amber snails, is a subspecies of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae.
This subspecies is endemic
to the South Island
of New Zealand
. It is found at altitudes of between 2,500 and 3,500 ft
on the hills to the east of Greymouth
in the South Island.
The shell is similar in shape and coloration to Powelliphanta rossiana fletcheri
but reaches a larger adult size, and has dense fine irregular striations on the dorsal
The shell diameter is up to 42 mm, and the height is up to 24 mm.
Powelliphanta rossiana gagei
is classified by the New Zealand Department of Conservation
as being Nationally Critical