Authors(s)	Knight-Jones, P. & E.W. Knight-Jones
Year	1977
Title	Taxonomy and ecology of British Spirorbidae (Polychaeta). J. mar. biol. Ass. U.K., 57: 453-499.

• Circeis armoricana
• Circeis spirillum
• Janua pagenstecheri
• Paradexiospira vitrea
• Spirorbis corallinae
• Spirorbis spirorbis
• Spirorbis tridentatus