The author describes two new species of marine molluscs (Gastropoda, Prosobranchia, Trochidae), Jujubinus poppei n. sp. and J. guanchus n. sp., both living on the coasts of the Canary Islands. J. poppei differs from other species in the J. montagui complex, to which it belongs, by its shape, colour and details of sculpture. J. guanchus shares some characters with the J. montagui complex, but shows several striking apomorphic features including a rounded body whorl and a reduced number of spirals. The possible phylogenetic relationships of the new species are discussed.