 The invisible rail , first classified by English zoologist George Robert Gray in 1860 , is the only member of the monotypic genus Habroptila . The genus name Habroptila derives from the Greek <unk> , " delicate , pretty , splendid " and <unk> , " feather , wing " ; <unk> commemorates British zoologist Alfred <unk> Wallace . Local names include " <unk> " , " <unk> " and " <unk> " . 
