Some shells of Chlamys behringiana bearing mollusks Trichamathina nobilis at upper valves were collected near North Kurile Islands. Egg capsules were found under most of shells of T. nobilis. Descriptions of egg capsules and larval shells are presented. Evidences of kleptoparasitic relationships between T. nobilis and C. behringiana are presented.

Based on the shell structure, anatomical and radular characters of seven species recorded from the Russian marine fauna and attributed to genera Latisipho and Helicofusus, L. pharcidus is reduced to the junior synonym of L. hypolispus, whereas L. errones, L. jordani, L. georgianus, and H. luridus – to the synonyms of L. hallii.

Two new species, Pararetifusus kantori sp. nov. and P. kosugei sp. nov. (Buccinidae: Colinae) are described from the Bering, Okhotsk and Japan seas. New data were obtained on the morphology of the type species of the genus Pararetifusus, P. tenuis.

In the Middle Oxfordian of European Russia a new gastropod was found, for which a new species and genus Liapinella liapini are proposed. This form is referred to the family Nystiellidae.