Pelagic Molluscs 2.0: Planktonic Gastropoda. In: Z. Nakai, et al. A preliminary report on the biological survey in the 'Kuroshio' area, south of Honshu, June-July 1955. Rec. oceanogr. Wks. Japan, (ns) Spec. no.: 171-181.

Authors(s)	Okutani, T.
Year	1957c
Title	Planktonic Gastropoda. In: Z. Nakai, et al. A preliminary report on the biological survey in the 'Kuroshio' area, south of Honshu, June-July 1955. Rec. oceanogr. Wks. Japan, (ns) Spec. no.: 171-181.