Aegista carinata

Aegista carinata is a species of air-breathing land snails, a terrestrial pulmonate gastropod in the family Camaenidae.

Descriprtion
It is more depressed than Trishoplita goodwinii (E. A. Smith, 1876) and distinctly keeled at the periphery.

Distribution and habitat
This shell occurs on Shikoku Island, Japan.