Annelida Lamarck, 1809 - segmented worms "polychaetes" see Class Polychaeta Grube, 1850 Scolecida G.W. Rouse & K. Fauchald, 1997 see Order Scolecida Rouse & Fauchald, 1997 Family Opheliidae Malmgren, 1867 Subfamily Opheliinae (Malmgren, 1867) Hartmann-Schröder, 1971 Genus Euzonus Grube, 1866 Euzonus mucronata (Treadwell, 1914)