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 6 Fam.3 Plate 43 [1854]. Antiope cristata Delle Chiaje, 1841 synonym Janolus cristatus (Delle Chiaje, 1841) accepted name Antiopa hyalina Alder & Hancock, 1854 synonym Janolus hyalinus (Alder & Hancock, 1854) accepted name. Date: 1854. Source:
https://www.biodiversitylibrary.org/item/131598#page/494/mode/1up. Author: Albany Hancock.