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 1 Fam. 3 Plate 21 1845]. *Eolis alba Alder & Hancock, 1844 synonym Favorinus branchialis (Rathke, 1806) accepted name