Dicharax (?) nakashimai (Minato, 1987)
Chamalycaeus (Sigmacharax) itonis nakashimai Minato, 1987b: 75-77, figs 4-6.
Chamalycaeus (Sigmacharax) nakashimai nakashimai - Minato and Yano 2000: 133, figs 5-7.
Chamalycaeus (Sigmacharax) itonis nakashimai - Minato 1988: 16.
Type locality.
"Namariyama, Misasa-cho, TÅhaku-gun , Tottori-ken, Japan".
Material examined.
NSMT-Mo 64355 (holotype).
Remarks.
Protoconch low, very finely granulated, moderately glossy (the protoconch of the holotype was partly weathered); R2 with ca. 20 low ribs, clearly separated at edge of body whorl; generally ribs more distinct than in S. itonis itonis ; here space between ribs is as wide as individual ribs; no visible space between the ribs closer to the tube, except for those situated close to the end of the tube; no spiral lines visible on R1.