Gudeoconcha is a genus of glass snails that is endemic to Australia’s Lord Howe Island in the Tasman Sea.

The single species is G. sophiae (Reeve, 1854).

It has four subspecies, two of which are extinct:[2] The shell of adult snails is 14.4–21.4 mm in height, with a diameter of 24.4–38.4 mm, depressedly turbinate with an angular whorl profile, sculptured with microscopic grooves and radial growth lines.

The animal is yellow-brown to dark brown with spots on the side of the tail, dark bands on the neck and a small caudal horn.

[2] The snails are found in leaf litter throughout the island, with the nominate subspecies in the lowlands and C. s. magnifica on the summits and upper slopes of the southern mountains.