{{Short description|Genus of gastropods}} {{Automatic_taxobox | image = Polycera-quadrilineata.jpg | image_caption = The nudibranch ''Polycera quadrilineata'', in situ, Gulen Dive Resort, Norway. | taxon = Polycera | authority = Cuvier, 1817<ref>Cuvier G. (1817) [https://www.biodiversitylibrary.org/item/18030 ''Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée.''] Tome 1, 540 pp.; Tome 2, 528 pp.; Tome 3, 653 pp.; Tome 4, 255 pp., 15 pl. Deterville, Paris. <nowiki>[Work generally dated 1817; published before 2 December 1816 according to Roux, 1976, Journal of the Society for the Bibliography of Natural History, 8(1): 31]</nowiki>.</ref> | type_species = ''Polycera quadrilineata'' | type_species_authority = Muller, 1776 | synonyms = * ''Galacera'' <small>Risso-Dominguez, 1960</small> * ''Polyceras'' Locard, 1886 (<small>Unjustified emendation</small>) }}

'''''Polycera''''' is a genus of sea slugs, specifically nudibranchs, shell-less marine gastropod molluscs in the family Polyceridae.

''Polycera'' is the type genus of the family Polyceridae.

== Species == Species in the genus ''Polycera'' include:<ref>Bouchet, P.; Gofas, S. (2014). [http://www.marinespecies.org/aphia.php?p=taxdetails&id=138369 ''Polycera'' Cuvier, 1816.] Accessed through: World Register of Marine Species on 2014-12-08</ref> * ''Polycera abei'' <small>(Baba, 1960)</small> * ''Polycera alabe'' <small>Collier & Farmer, 1964</small> * ''Polycera anae'' <small>Pola, Sánchez-Benítez & Ramiro, 2014</small> * ''Polycera atra'' <small>MacFarland, 1905</small> orange-spike polycera * ''Polycera aurantiomarginata'' <small>García-Gómez & Bobo, 1984</small> * ''Polycera aurisula'' <small>Er. Marcus, 1957</small> * ''Polycera capensis'' <small>Quoy & Gaimard, 1824</small> * ''Polycera chilluna'' <small>Er. Marcus, 1961</small> * ''Polycera elegans'' <small>(Bergh, 1894)</small> alternate representation of ''Greilada elegans'' * ''Polycera faeroensis'' <small>Lemche, 1929</small> * ''Polycera fujitai'' <small>Baba, 1937</small> * ''Polycera hedgpethi'' <small>Er. Marcus, 1964</small> * ''Polycera herthae'' <small>Ev. Marcus & Er. Marcus, 1963</small> * ''Polycera hummi'' <small>Abbott, 1952</small> * ''Polycera janjukia'' <small>Burn, 1962</small> * ''Polycera japonica'' <small>Baba, 1949</small> * ''Polycera kaiserae'' <small>Hermosillo & Valdés, 2007</small> * ''Polycera maculata'' <small>Pruvot-Fol, 1951</small> * ''Polycera maddoxi'' <small>Miller, 2005</small> * ''Polycera manzanilloensis'' <small>Ortea, Espinosa & Camacho, 1999</small> * ''Polycera marplatensis'' <small>Franceschi, 1928</small> * ''Polycera melanosticta'' <small>Miller, 1996</small> * ''Polycera norvegica'' <small>Sørensen, Rauch, Pola & Malaquias, 2020</small> * ''Polycera odhneri'' <small>Er. Marcus, 1955</small> * ''Polycera parvula'' <small>(Burn, 1958)</small> * ''Polycera picta'' <small>Risbec, 1928</small> * ''Polycera priva'' <small>Er. Marcus, 1959</small> * ''Polycera quadrilineata'' <small>(O. F. Müller, 1776)</small> * ''Polycera risbeci'' <small>Odhner, 1941</small> * ''Polycera rycia'' <small>Er. Marcus & Ev. Marcus, 1970</small> * ''Polycera'' sp. twin-crowned nudibranch<ref>Gosliner, T.M. (1987). ''Nudibranchs of Southern Africa'' {{ISBN|0-930118-13-8}}</ref> * ''Polycera tricolor'' <small>Robilliard, 1971</small> three-color polycera * ''Polycera xicoi'' <small>Ortea & Rolán, 1989</small> ;Species brought into synonymy: * ''Polycera atlantica'' Pruvot-Fol, 1956: synonym of ''Polycera elegans'' (Bergh, 1894) * ''Polycera citrina'' Alder & Hancock, 1841: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera conspicua'' Allan, 1932: synonym of ''Polycera capensis'' Quoy & Gaimard, 1824 * ''Polycera cooki'' Angas, 1864: synonym of ''Paliolla cooki'' (Angas, 1864) * ''Polycera cornigera'' Adams & Reeve in Adams, 1848: synonym of ''Ceratosoma trilobatum'' (J.E. Gray, 1827) * ''Polycera cristata'' Alder, 1841: synonym of ''Ancula gibbosa'' (Risso, 1818) * ''Polycera dubia'' M. Sars, 1829: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera gnupa'' Er. Marcus & Ev. Marcus, 1967: synonym of ''Polycera hedgpethi'' Er. Marcus, 1964 * ''Polycera horrida'' Hesse, 1872: synonym of ''Aegires punctilucens'' (d'Orbigny, 1837) * ''Polycera incognita'' (Ortea, Espinosa & Caballer, 2005): synonym of ''Kankelibranchus incognitus'' Ortea, Espinosa & Caballer, 2005 * ''Polycera lessoni'' d'Orbigny, 1837: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera lessonii'' d'Orbigny, 1837: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera lineatus'' Risso, 1826: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera mediterranea'' Bergh, 1879: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera messinensis'' Odhner, 1941: synonym of ''Polycera elegans'' (Bergh, 1894) * ''Polycera modesta'' Lovén, 1846: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera nigrocrocea'' Barnard, 1927: synonym of ''Polycera capensis'' Quoy & Gaimard, 1824 * ''Polycera nigrolineata'' Dautzenberg & Durouchoux, 1913: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera nigropicta'' Ihering, 1885: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera nothus'' (Johnston, 1838): synonym of ''Palio nothus'' (Johnston, 1838) * ''Polycera ocellata'' Alder & Hancock, 1842: synonym of ''Palio nothus'' (Johnston, 1838) * ''Polycera ornata'' d'Orbigny, 1837: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera pudica'' Lovén, 1846: synonym of ''Palio dubia'' (M. Sars, 1829) * ''Polycera punctilucens'' d'Orbigny, 1837: synonym of ''Aegires punctilucens'' (d'Orbigny, 1837) * ''Polycera salamandra'' Labbé, 1931: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera tabescens'' Risbec, 1928: synonym of ''Tambja limaciformis'' (Eliot, 1908) * ''Polycera typica'' W. Thompson, 1840: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera varians'' M. Sars, 1840: synonym of ''Polycera quadrilineata'' (O. F. Müller, 1776) * ''Polycera webbi'' d'Orbigny, 1839: synonym of ''Felimare picta'' (Schultz in Philippi, 1836) * ''Polycera zeylanica'' Kelaart, 1858: synonym of ''Plocamopherus ceylonicus'' (Kelaart, 1858) * ''Polycera zosterae'' O’Donoghue, 1924: synonym of ''Palio dubia'' (M. Sars, 1829) ;Nomine dubia * ''Polycera funerea'' <small>Pruvot-Fol, 1930</small> * ''Polycera pruvotae'' <small>Risbec, 1953</small>

==References== {{Reflist}}

== External links == * {{Malacologia14radula}}

{{Taxonbar|from=Q3019855}}

Category:Polyceridae Category:Gastropod genera Category:Taxa named by Georges Cuvier