(ofPolycera cristata Alder, 1841)Alder J. (1841). Observations on the genus <i>Polycera</i> with descriptions of two new British species. <i>Annals and Magazine of Natural History 6</i>: 337-342, pl. 9 [gennaio][details]
original description(ofPolycera cristata Alder, 1841)Alder J. (1841). Observations on the genus <i>Polycera</i> with descriptions of two new British species. <i>Annals and Magazine of Natural History 6</i>: 337-342, pl. 9 [gennaio][details]
basis of recordAlder, J. & A. Hancock. (1845-55). A monograph of the British Nudibranchiate Mollusca: with figures of all the species. <em>Ray Society, London.</em> 1-54, pls.1-48., available online athttp://www.biodiversitylibrary.org/bibliography/65015[details]
additional sourceBalch, F. N. (1909). A spring collecting trip. Notes on New England nudibranchs II. <em>The Nautilus.</em> 23(3): 33-38., available online athttps://www.biodiversitylibrary.org/page/5314618 page(s): 38 [details]
Present Inaccurate Introduced: alien Containing type locality