This species is found in Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia.

[2] The shells of R. horei are composed of six reddish-brown whorls, which are smoothly curved.

The visible soft parts of the animal are colored grey or olive green, with a brown foot and white sole.

It occurs in depths from 80 to 100 centimetres (31 to 39 in), frequently under rocks.

[1] The species is widespread and common, although the most significant threat to its survival is sedimentation of habitat.