the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Annelida > [noun] > class Chaetopoda > order Polychaeta > suborder Nereidiformia > genus Nereis > member of (2)
a dimorphic sexual form of certain worms of the genus Nereis, so called because originally regarded as a distinct genus; also attributive.
of, pertaining to, or of the character of a heteronereis; (also as n.) a heteronereis.