xen·o·pus 
(zĕnə-pəs)
(zĕnə-pəs)n.
Any of various aquatic, tongueless, clawed frogs of the genus Xenopus of southern Africa, certain species of which, especially the African clawed frog, are widely used for biological research.
[New Latin Xenopūs, genus name : XENO- + Greek pous, foot; see OCTOPUS.]