Dicharax (?) nakashimai ditaceus (Minato & Yano, 2000)
Chamalycaeus (Sigmacharax) nakashimai ditaceus Minato & Yano, 2000: 129-133, figs 1-4.
Type locality.
"Ochiiwa (35°24'N, 134°22'E), Kooge-cho, Yazu-gun, Tottori Prefecture, Japan".
Material examined.
NSMT-Mo 71684 (holotype).
Remarks.
Protoconch low, relatively glossy, finely granulated with some fine radial growth lines; R2 with ca. 26 low riblets, more distinct at edge of body whorl, but overall very obscure; no spiral lines visible on R1.