Nemertea
From ZooTerms (Dictionary of Invertebrate Zoology)
Nemertea also nemerteans, nemertines or rhynchocoels (noun, plural; Greek Nemertes, a nereid, sea nymph): A phylum of unsegmented, bilaterally symmetrical acoelomate worms, commonly called ribbon worms, that are predatory carnivores or scavengers that frequently use their eversible proboscis to catch prey.
