Shells of Nakamigawaia species.
A, Nakamigawaia spiralis, holotype, NSMT-39805, ventral (upper) and dorsal (lower) views (macrophotograph), Japan.
B, Nakamigawaia nakanoae sp. nov., micrograph of dorsal view; arrow pointing to protoconch, ZMBN 132073, animal length (L) = 7 mm (fixed length), Japan. C, Nakamigawaia nakanoae sp. nov., micrograph of ventral view, ZMBN 132073, L = 7 mm (fixed length), Japan. D, Nakamigawaia nakanoae sp. nov., micrograph of protoconch observed from ventral side of shell, ZMBN 116778, L = 10 mm, Taiwan.
E, Nakamigawaia felis, micrograph of dorsal view, ZMBN 91108, L = 13 mm, the Bahamas. F, Nakamigawaia felis, micrograph of ventral view, ZMBN 91108, L = 12 mm, the Bahamas.
Scale bars: a = 200 μm; b, c, e, f = 500 μm; d = 100 μm.
