T.  Habe, Shells of the Western Pacific in color, vol. 2. Osaka: Hoikusha Publishing Co., Ltd., 1970, p. 233.

K. Y.  Arakawa, ?Scatological studies of the Bivalvia (Mollusca)?, Advances in Marine Science, vol. 8, pp. 307-436, 1970.

T.  Habe, Shells of the Western Pacific in color, vol. 2. Osaka: Hoikusha Publishing Co., Ltd., 1970, p. 233.