Theliostyla albicilla (English spelling) Theliostylaalbicilla

…In summer, it lays yellowish-white oval egg sacs on rocks. Theliostyla albicilla , a member of the same family, is similar to this species, but has about 20 thick ribs on the surface of its shell. It is also commonly found on rocky coasts south of the Boso Peninsula in Honshu. …

*Some of the terminology that mentions "Theliostyla albicilla" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…夏季，岩れきの上に黄白色楕円形の卵囊を産む。同科のアマオブネガイTheliostyla albicillaはこの種に似るが，殻表に太い肋が約20本ある。同じく本州の房総半島以南の岩れきの海岸にふつう。…

※「Theliostyla albicilla」について言及している用語解説の一部を掲載しています。

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