T.  Krumbach, ?Scyphozoa?, in Handbuch der Zoologie: eine Naturgeschichte der Stämme des Tierreiches, vol. 1, W.  Kükenthal, Ed. Berlin und Leipzig: , 1925, pp. pp. 522-576.

V. A.  Yashnov, ?Scyphozoa?, in Guide for Identification of the Fauna and Flora of the Northern Seas of the U.S.S.R. (In Russian), N. S.  Gaevskaya, Ed. Moscow: , 1948, pp. 75-77, plate 22 (p. 584).