PARASITIC GASTROPODS FOUND IN ECHINODERMS FROM JAPAN

Abstract

Hitherto twenty one species of gastropods parasitic on echinoderms have been recorded from Japan by various authors, such as RANDALL et HEATH (1912), S. HIRASE (1920, 1927, 1932), DALL (1925), Grsd;N (1927), Is. T AKI (1929), IWANOFF (1933), MORTENSEN (1940, 1943), KAWAHARA (1943), HABE (1944, 1950, 1951), KURODA (1949) and KURODA et HABE (1950). In this paper eight more species are added to this list. Of these six are new to science and also parasitic habits are confirmed in other two species which have never been noticed in this country. It is my pleasant duty to acknowledge here my deep indebtedness to Dr. Taku KOMAI and Dr. Tokubei KURODA for their kind direction and encouragement in the course of my study. My hearty thanks are also due to Prof. Denzaburo MIADI, Dr. Iwao TAKI, Dr. Huzio UTINOMI, Dr. Takasi TOKIOKA, Messrs. Toshihiko YAMANOUTI, Torao YAMAMOTO, Akibumi TERAMACHI, Masuoki HORIKOSI and Takashi SAITO for their kindness in placing their collections at my disposal.