The genus Bispira Kroyer, 1856 currently belongs to the family Sabellidae Latreille, 1825 and comprises 22 species of benthic polychaetes. The monophyly of the genus is not currently assessed by any synapomorphy. Some morphological characters, including

Bispira polyomma sp. nov. is described. The taxon was recently found on the SW coast of The Netherlands (NE Atlantic), and could not be referred to as any previously described species of the genus Bispira. The area has been thoroughly investigated in

The fan worm Bispira brunnea is one of the most attractive sabellid polychaetes from Caribbean coral reef areas and it is exploited for ornamental purposes. An understanding of the structure of its aggregations, morphology and reproductive biology will