2000 年 59 巻 4 号 p. 267-275
Two more trochoid species are added to the gastropod fauna in North Knoll of Iheya Ridge, Okinawa Trough, based on new collection of Shinkai 2000 : Iheyaspira lequios n. gen. et n. sp. characterized by skeneid-like shell and 12 lateral teeth of radula, and Margarites ryukyuensis n. sp.