Laonice Malmgren, 1867 species from the Arctic and the North Atlantic are revised. Existing types of five species recorded from the area are described. All available material has been used and cited. New approaches to the use of widely varying and size-related numeric characters are put into practice. Eight species of the genus Laonice were found: L. appelloefi, L. bahusiensis, L. blakei, L. cirrata, L. dayianum, L. norgensis sp. nov., L. sarsi and L. shamrockensis sp. nov. Descriptive and nomenclatural confusions among existing species are analysed and, where necessary, such species are redescribed on the basis of an appropriate range of common characters. Lectotypes of L. bahusiensis and L. sarsi are designated. Spionides foliata, S. sacculata and L. pugettensis are synonymized with L. cirrata. A key for all species recorded from the area is provided.
Arctic Basin in general
Arctic-Boreal marine
Cold North Atlantic and Arctic together
North Atlantic
