Thorunna horologia is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.MolluscaBase (2018). Thorunna horologia Rudman, 1984. Accessed on 2018-12-24.
Distribution This species was described from Dar Es Salaam, Tanzania. It has been reported from South Africa and Réunion.Rudman, W.B., 1998 (November 11) Thorunna horologia Rudman, 1984. [In] Sea Slug Forum. Australian Museum, Sydney. References