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 24 . *Eolis concinna Alder & Hancock, 1843 synonym Cuthona concinna (Alder & Hancock, 1843) accepted name