The genus
Quadricirra Banse, 1977 is not recognized, since its principal diagnostic character, the presence of accessory parapodial cirri, is sexually dimorphic and cannot be correlated with other characters; thus
Micronereis is the sole genus of the subfamily Notophycinae. A new species,
M. piccola, is described and
M. siciliensis and
M. bodegae are synonymized with
M. variegata and
M. nanaimoensis respectively. A key to males and descriptions of all species are provided. The Notophycinae appears to be the most derived subfamily of Nereididae, characterized by a combination of epitokal modifications retained from their nereidid relatives and specializations acquired as members of the meiofauna.
