Ikeda, H. 1935. A new Clypeaster from Japan. Annotationes Zoologicae Japonenses 15(1): 103–104 pl. 7
Ives, J.E. 1891. Echinoderms and arthropods from Japan. Proceedings of the Academy of Natural Sciences of Philadelphia 1891(2): 210–223 pls 7–11
Ikeda, H. 1935. A new Clypeaster from Japan. Annotationes Zoologicae Japonenses 15(1): 103–104 pl. 7
Ives, J.E. 1891. Echinoderms and arthropods from Japan. Proceedings of the Academy of Natural Sciences of Philadelphia 1891(2): 210–223 pls 7–11