| Powelliphanta spedeni | |
|---|---|
|  | |
| Powelliphanta spedeni lateumbilicata at Te Papa | |
| Scientific classification | |
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Gastropoda | 
| (unranked): | clade Heterobranchia clade Euthyneura | 
| Superfamily: | Rhytidoidea | 
| Family: | Rhytididae | 
| Genus: | Powelliphanta | 
| Species: | P. spedeni | 
| Binomial name | |
| Powelliphanta spedeni Powell, 1932 | |
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Powelliphanta spedeni, known as one of the amber snails, 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. There are two subspecies:
The shell of Powelliphanta spedeni reaches a maximum size of 40 mm.
Powelliphanta spedeni produces an egg up to the size of 11.5 mm. Shape of the eggs is oval and seldom constant in dimensions 11.5 × 9 mm, 11 × 9 mm, 9 × 7.75 mm. Its eggs are laid in March.