Description: English: Alder J. & Hancock A. (1845-1855). A monograph of the British nudibranchiate Mollusca: with figures of all the species. The Ray Society, London. Published in 8 parts:Part 7 Fam.3 Plate 38 [1855]. Date: 1855. Source: https://www.biodiversitylibrary.org/item/131598#page/446/mode/1up Fiona nobilis Alder & Hancock, 1848 synonym Fiona pinnata (Eschscholtz, 1831) accepted name Explanation of PlateRead full text. Author: Albany Hancock.