References I

IKEDA H. (1939) Studies on the pseudofasciole of the scutellids (Echinoidae, Scutellidae). Journ. Depart. Agric. Kyushu Imperial univ., 6, p.41-93.

IVESA L. (1998) Sea urchin Paracentrotus lividus (Lamarck, 1816) (Echinodermata, Echinoidea) population of the southern Istria (Adriatic Sea). Period. biol., 100, p.93-99.

Imaoka T, Irimura S, Okutani T, Oguro C, Oji T & Kanazawa K. (1991) Echinoderms from continental shelf and slope around Japan. Vol. II. Tokyo: Japan Fisheries Resource Conservation Assoc. Press.

Imaoka T., Irimura S., Okutani T., Oguro C., Oji T., Shigei M. & Horikawa H.. (1990) Echinoderms from continental shelf and slope around Japan. Vol. I. Tokyo: Japan Fisheries Re­source Conservation Assoc. Press.