A, B Chain of stolons (Myrianida spp.) C Polybostrichus D Sacconereis, with brooding ventral sac E Sacconereis.

 
 
  Part of: San Martín G, Worsfold TM (2015) Guide and keys for the identification of Syllidae (Annelida, Phyllodocida) from the British Isles (reported and expected species). ZooKeys 488: 1-29. https://doi.org/10.3897/zookeys.488.9061