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S.  Higo, Callomon, P., and Goto, Y., Catalogue and Bibliography of the Marine Shell-bearing Mollusca of Japan, Type Figures. Osaka: Elle Scientific Publications, 2001, p. 208.

S.  Higo, Callomon, P., and Goto, Y., Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Osaka: Elle Scientific Publications, 1999.