Imajima, M. (1990). Spionids (Annelida, Polychaeta) obtained by dredging from Oshima Strait and Yakiuchi Bay, Amami-Oshima of the Ryukyu Islands. Memoirs of the National Science Museum, Tokyo. 23: 93-99.
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Imajima, M.
1990
Spionids (Annelida, Polychaeta) obtained by dredging from Oshima Strait and Yakiuchi Bay, Amami-Oshima of the Ryukyu Islands
[Abtract in Japanese. English introduction as follows:]
In July 1989 a survey of benthic polychaetes for the Natural History Research Project of the Japanese Islands by the National Science Museum, Tokyo was carried out in Oshima Strait and Yakiuchi Bay, Amami-Oshima of the Ryukyu Islands. The Ryukyu Islands are influenced by the Kuroshio Current, and have many Indo-Malayan marine elements.
Although many polychaetes were obtained in this survey by dredging from depths ranging from 36 through 70 m, this report deals with spionids only. Until now only one spionid species, Prionospio (Prionospio) ehlersi, had been recorded from the area (Imajima,1990 c). In the present study 9 species and 4 indeterminable species in 6 genera were recognized. The material includes one new species of the genus Prionospio (Prionospio), and Prionospio (Prionospio}
tridentata is newly added to the Japanese fauna. Four indeterminable species will be reported later. Locations of the dredging stations are shown in Fig. 1. The bulk of the co]lection, including type specimens, has been deposited in the National Science Museum, Tokyo.
Thanks are due te the staff of the Tasaki Pearl Ltd., for their assistance in collecting the specimens and Dr. Nancy J. Maciolek, Massachusetts, U.S.A. for critically reading the manuscript and for valuable suggestions.