Complete food tube with mouth and anus. Captures food with proboscis, often armed with a stylet at the tip. Most are dioecious. Zygote develops into pilidium or desor larva with a flatworm-like gut. Some are commensals or parasites.
Marine species are usually benthic.
Proboscis uniform and unarmed. Tubulanus, Cepahalothrix, Lineus, Cerebratulus. Prostoma, Amphiporus, Malacobdella. Susquehanna University assumes no responsibility for the content of this web page. Please read the disclaimer .