Published online by Cambridge University Press: 18 February 2004
Four new species of the genus Leucon and subgenus Leucon (sensu Watling, 1991) are described from the Atlantic Frontier Margin and other north-east Atlantic localities. They are L. sarsi sp. nov., L. holti sp. nov., L. hanseni sp. nov. and L. afeni sp. nov. Leucon hanseni sp. nov. has previously been wrongly identified as L. serratus, the holotype of which is illustrated here. A lectotype is selected for L. nathorsti and the species is redescribed from the type series and from Atlantic Frontier Margin material. A list of other Leucon (Leucon) species found in the Atlantic Frontier Environmental Network surveys is given.