A genus of tubicolous annelids having a circle of plumose gills around the head.
Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae
as, tubicolous worms.
One of the peculiar minute chitinous hooks found in large numbers in the tori of tubicolous annelids belonging to the Uncinata.
