 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 habros , " delicate , pretty , splendid " and ptilon , " feather , wing " ; wallacii commemorates British zoologist Alfred Russel Wallace . Local names include " soisa " , " tibiales " and " rèie " . 
 The invisible rail , first classified by English zoologist George Robert Gray in 1860 , <a href='drop_aux' title='1'><mark>is</mark></a>the only member of the monotypic genus Habroptila . The genus name Habroptila <a href='uninflect' title='2'><mark>derives</mark></a> from the Greek habros , " delicate , pretty , splendid " and ptilon , " feather , wing " ; wallacii <a href='uninflect' title='3'><mark>commemorates</mark></a> British zoologist Alfred Russel Wallace . Local names include " soisa " , " tibiales " and " rèie " . 
The invisible rail , first classified by English zoologist George Robert Gray in 1860 , da only member of tdamonotypic genus Habroptila . Thdaenus name Habroptila derive from the Greek habros , " delicate , pretty , splendid " and ptilon , " feather , wing " ; wallacii commemorate British zoologist Alfred Russel Wallace . Local names include " soisa " , " tibiales " and " rèie " .