Eulalia is een geslacht van borstelwormen uit de klasse van de Polychaeta (borstelwormen).
Soorten Eulalia (Eulalia) microphylloides Hartmann-Schröder, 1979 Eulalia (Phyllotethys) kosswigi La Greca, 1949 Eulalia (Sige) venustissima Banse, 1959 Eulalia (Steggoa) parasubulifera Hartmann-Schröder, 1974 Eulalia anoculata Hartman & Fauchald, 1971 Eulalia aurea Gravier, 1896 Eulalia austrophylliformis Uschakov, 1972 Eulalia bilineata (Johnston, 1840) Eulalia brevicornis (Moore, 1894) Eulalia brunnea (Hartmann-Schröder, 1963) Eulalia clavigera (Audouin & Milne Edwards, 1833) Eulalia dubia Webster & Benedict, 1884 Eulalia ellipsis (Dalyell, 1853) Eulalia eos Michaelsen, 1897 Eulalia expusilla Pleijel, 1987 Eulalia gemina Kato & Mawatari, 2001 Eulalia gracilior (Chamberlin, 1919) Eulalia gravieri Uschakov, 1972 Eulalia hanssoni Pleijel, 1987 Eulalia havaica Kinberg, 1866 Eulalia hutchinsonensis (Perkins, 1984) Eulalia impostii Quatrefages, 1865 Eulalia incompleta Quatrefages, 1866 Eulalia lanceolata Hartmann-Schröder, 1981 Eulalia lapsus Pleijel, 1991 Eulalia levicornuta Moore, 1909 Eulalia lobocephala Schmarda, 1861 Eulalia lobulata Moore, 1894 Eulalia longocirrata Støp-Bowitz, 1948 Eulalia magalhaensis Kingberg Eulalia megalops Verrill, 1900 Eulalia meniceros Pruvot, 1883 Eulalia meteorensis Böggemann, 2009 Eulalia mexicana Fauchald, 1972 Eulalia microoculata Pleijel, 1987 Eulalia microphylla Schmarda, 1861 Eulalia mucosa Quatrefages, 1866 Eulalia mustela Pleijel, 1987 Eulalia myriacyclum (Schmarda, 1861) Eulalia novaezelandiae (Grube, 1880) Eulalia ornata Saint-Joseph, 1888 Eulalia pachycirra Hartman, 1978 Eulalia pacifica (Imajima, 1964) Eulalia personata Gravier, 1907 Eulalia pulchra Langerhans, 1884 Eulalia pusilla Ørstedt, 1843 Eulalia quadricornis Örsted, 1843 Eulalia quadrioculata Moore, 1906 Eulalia rubiginosa Saint-Joseph, 1888 Eulalia sandwichensis Uschakov, 1975 Eulalia saxicola Quatrefages, 1866 Eulalia semenovi Averincev, 1972 Eulalia sigeformis Annenkova, 1937 Eulalia subulifera Ehlers, 1897 Eulalia tenax Eulalia thileniusi Augener, 1927 Eulalia tjalfiensis Ditlevsen, 1917 Eulalia trilineata de Saint-Joseph, 1888 Eulalia tripunctata McIntosh, 1874 Eulalia varia Ehlers, 1908 Eulalia venusta de Saint Joseph, 1888 Eulalia viridis (Linnaeus, 1767) – groene bladkieuwworm