A Pleistocene new material of dormice (Genus Glis) is de¬scribed. Three morphological species are recognized on the basis of size and morphology of the teeth: Glis sackdillingensis Heller, 1930, Glis mihevci nov. sp., and Glis perkoi nov. sp. The two new species, larger than G. sackdillingensis, are morpho¬logically less evolved than the present day Glis glis of Slovenia, which has larger teeth.