Tasmaphena lamproides is a species of land snail in the family Rhytididae. It occurs in north-western Tasmania and probably far southern Victoria. It is known by the common name keeled snail.

There are many small subpopulations, and the total population in Tasmania is probably a few hundred thousand snails. The snail generally lives in wet forest habitat. Some subpopulations are threatened by logging and clearing of forests for development and agriculture.

...