Door snail (Kiselgai)

Japanese: キセルガイ(煙管貝) - キセルガイ（英語表記）door snail

A general term for slender land snails of the Clausilia family. There are about 150 species in Japan, distributed from southern Hokkaido to Okinawa, where they live under fallen leaves in mountains and fields or on rotting wood. The shell is usually spindle-shaped but can also be club-shaped. In general, it is named after the shape that resembles the old "Natama Megisuru". There are many coils, ranging from 6 to 14 stories, and all Japanese species are left-handed. The opening of the shell is oval with thickened edges in adult shells, with 1 to 3 wrinkles inside the opening, and wrinkles of various lengths inside the last coil.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

細長いキセルガイ科Clausiliaの陸産巻貝の総称。日本には150種ほどが北海道南部から沖縄に分布し，山野の落葉の下や朽木にすむ。殻は通常紡錘形であるが棍棒状のこともある。一般にその形が昔の〈なたまめぎせる〉に似ているのでこの名がある。巻数は多く6～14階に及び，日本産はすべて左巻き。殻口は卵形で成貝ではその縁が厚くなり，殻口内に1～3本のしわがあり，また最後の巻きの内部にも長短種々のしわがある。

出典　株式会社平凡社世界大百科事典第２版について　情報

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