Hickman VV 1956 (citation)- from Tasmania- in esophagus of Echinocardium cordatum. (see zoological record 1959). Dorjes J 1968 (citation)- lists. Jennings JB 1971 (citation)- lists in table p 3 with host Echinocardium cordatum. Dorjes J 1972 (citation)- lists. Faubel A 1976 (citation)- mentions p 21. Ehlers U, Doerjes J 1979 (citation)- compare with Avagina polyvacuola from Galapagos p 14.