title: Epitonioidea
text: # Epitonioidea
  
  Epitonioidea is a superfamily of planktonic and ectoparasitic sea snails, marine gastropod molluscs within the informal group Ptenoglossa. This superfamily includes the wentletraps and the purple snails.
  
  ## Taxonomy
  
  Families and subfamilies within this superfamily are as follows:
  
  * Family Epitoniidae S.S. Berry, 1910, the wentletraps
  * Family Janthinidae Lamarck, 1822, the purple snails
  * Family Nystiellidae Clench & Turner, 1952
  