Webster's 1913 Dictionary
HELMINTHES
Hel *min "thes, n. pl. Etym: [NL. , fr. Gr. (Zoöl.)
Defn: One of the grand divisions or branches of the animal kingdom. It is a large group including a vast number of species, most of which are parasitic. Called also Enthelminthes, Enthelmintha.
Note: The following classes are included, with others of less importance: Cestoidea (tapeworms ), Trematodea (flukes, etc. ), Turbellaria (planarians ), Acanthocephala (thornheads ), Nematoidea (roundworms, trichina, gordius ), Nemertina (nemerteans ). See Plathelminthes, and Nemathelminthes.
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