Literature
  • Johnston 1847
  • A history of the British Zoophytes (2nd edn). Van Voorst, London. Vol. 1(text): xvi+488 pp.; Vol. 2: 74 pls.
  • 1948
  • Faunistic Notes. Rep. mar. biol. Stn Port Erin 61: 27.
  • 1904
  • Pennatulida. Dan. Ingolf-Exped. 5 (1): 1-95.