bubble shell

== English == === Noun === bubble shell (plural bubble shells) Any of the headshield slugs of genus Bulla, belonging to the order Cephalaspidea of gastropods. (malacology) A marine univalve shell of the genus Bulla (Bullidae) and certain shells of similar appearance of the now disused order Tectibranchiata of molluscs. Any of the family Epitoniidae (syn. Janthinidae), of pelagic sea snails. ==== Synonyms ==== (Janthinidae): purple snail, violet snail === References === Bulla (gastropod) on Wikipedia.Wikipedia Bulloidea on Wikispecies.Wikispecies Bulla (genus) on Wikimedia Commons.Wikimedia Commons Bulla at World Register of Marine Species Janthinidae on Wikipedia.Wikipedia Janthinidae on Wikispecies.Wikispecies Janthinidae at World Register of Marine Species William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “bubble shell”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC. “bubble shell”, in OneLook Dictionary Search.