MYZOSTOMIDA (ANNELIDA) FROM SINGAPORE, WITH RELATED INDO-PACIFIC DISTRIBUTION RECORDS AND DESCRIPTIONS OF 3 NEW SPECIES

Seven myzostomidan species of the genus Myzostoma F.S. Leuckart, 1836, were observed alive in association with comatulid crinoids collected in the territorial waters of Singapore. An eighth species from Singapo re was found in a museum collection. All eight species are described a nd most are illustrated by color photographs from life and by scanning electron micrographs. Three of the species are new to science: M. jae gersteni, M. capitocutis and M. singaporense; M. brachiatum Graff, 187 7, is recorded for the second time and a lectotype is designated for i t. Other new Indo-West Pacific distribution records of four of the eig ht species are listed.