The Atoll of Funafuti, Ellice group : its zoology, botany, ethnology and general structure based on collections made by Charles Hedley of the Australian Museum, Sydney, N.S.W.
Hydatina physis, Linne
Hydatina physis, Linne.
Pilsbry, loc. cit., p. 387, pl. xlv., figs. 14, 15, 16, 17.
Mr. G. Sweet found a young shell of this world wide species.