洞螈亚目
Proteidea \Pro`te*id"e*a\, n. pl. [NL. See {Proteus}, and {-oid}.] (Zo["o]l.) An order of aquatic amphibians having prominent external gills and four legs. It includes Proteus and Menobranchus ({Necturus}). Called also {Proteoidea}, and {Proteida}.