Ectinosomatid material was examined from extensive collections around the British Isles and from several additional world localities and museum collections, permitting a revision of the genusHalectinosoma. This paper describes 12 morphologically similar species and erects five new species.H. sarsi(Boeck) is regarded asspecies incertae sedis, whileH. sarsi sensuSars (1904) is redescribed asH. pseudosarsisp. nov.;H. sarsi sensuT. & A. Scott (1894) is synonymized withH. canaliculatum(Por).H. propinquumis regarded as a junior subjective synonym ofH. chrystalli(T. Scott).H. clavatum(Sars) is resurrected, having previously been regarded as a synonym ofH. brunneum(Brady). A key for the identification of females belonging to this group of species is provided. © 1995 The Linnean Society of London.
- ADDITIONAL KEY WORDS:Meiobenthos