Two new species of the genus Echinopsolus-E. sanamyanorum and E. onekotanensis are described. This genus is new for North-Western Pacific marine fauna. Echinopsolus sanamyanorum was collected in the Avacha Gulf (south-east coast of Kamchatka), E. onekotanensis-near the Onekotan Island (The Kuril Islands).
Keywords: Echinodermata, North-Western Pacific, Avacha Gulf, Onekotan Island, holothurians, new species, Holothuroidea, Dendrochirotida, Cucumariidae, Echinopsolus sanamyanorum, Echinopsolus onekotanensis.