Cupedora marcidum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae, and is endemic to Australia.
The species was first described as Xanthomelon marcidum in 1912 by Charles Hedley,[1] from specimens collected on "Uabba Range, twelve miles west of l.ake Cudgellico, Central New South Wales".