Siphonaria stewartiana is a species of air-breathing sea snail , a false limpet , a marine pulmonate gastropod mollusc in the family Siphonariidae , the false limpets .
Siphonaria stewartiana is a species of air-breathing sea snail , a marine limpet , a false gastropod mollusc in the family Siphonariidae , the false pulmonate limpets .