Cuthona nana - Alder J. &amp; 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 10 [1854]. <ul><li>Eolis peachii Alder &amp; Hancock, 1848 synonym Cuthona nana (Alder &amp; Hancock, 1842) accepted name</li></ul> © Albany Hancock - Public domain - Wikimedia Commons