Hirasea sinuosa is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Endodontidae.
This is an endangered species. The width of the shell is 6 mm. The height of the shell is 3 mm.
Distribution This species (and indeed the whole genus) is endemic to Japan.
References
原色日本陸産貝類図鑑 (保育社の原色図鑑 (61))