HESIONIDAE (ANNELIDA, POLICHAETA) FROM JAPAN. I. by Hiro ...

58 Kuroshio Biosphere : BULL. BIOL. INST. KUROSHIO Vol. 1, 2004
materials. In the description, Okuda (1936) reported his materials from the burrows of an
apodus holothurian, Protankyra bidentata (Woodward et Barrett, 1858).
The 8 occasions of the new species at muddy bottom in Ohmura Bay, by the Ekman-
Birge mud sampler. In 4 occasions out of total 8, Protankyra bidentata is also recorded
together with the new species, and the holothurian is a rather common member of the fauna
of the sampling area. Therefore, it may be probable that my materials live together with the
holothurian, that Okuda (1936) recorded as associate animals of his Podarke pugettensis.
The locality of Okuda's Ophiodromus and those of my materials also west coast of Kyushu,
Japan.
Pareulekar (1972) recorded Podarke angustifrons associated with the holothurian
from the Arabian coast of India. His specimen has white bands, and may be identical with
the new species. The original figure of parapodium of Cirrosyllid didymocera Schmarda,
1861 (p. 77, Fig. a) with a long cirriform presetal lobe, and rather resembles to the
parapodia of the new species, but has no white bands on dorsum. Iruma limicola Willey,
1905 with somewhat similar parapodium to the new species according to the original
description (Pl. 3, Fig. 74). However, the exact form of notopodial cirrophores uncertain, I.
limicola is a member of incertae sedis in the genus. No mentions was given on the dorsal
white bands of this Ceylon species.
ETYMOLOGY.
Named dedicated to the Japanese Polychaetologist, late Prof. Shiro Okuda. The new
species was firstly reported from burrows of an apodous holothurian from Japan by him as
Podarke pugettensis, together with the exact arrangement of dorsal white bands.
Ophiodromus parapallidus, sp. nov.
(Figs. 12-13, Pl. 1, fig. 6)
MATERIAL EXAMINED.
Holotype: Kushimoto, Izumo, Wakayama Prefecture, Oct. 18, 1976, lobster gill-net,
M. Suzuki, collector.
Paratypes: Kushimoto, Sabiura, July, 1, 1973, 1 specimen; Kushimoto, Izumo, Oct.
18, 1976, lobster gill-net, M. Suzuki, collector, 2 specimens; Kushimoto, Arita, Nov. 30,
1976, the same method, H. Misaki, collector, 1 specimen; Kushimoto, Arita, Dec. 1, 1976,
the same method, H. Misaki & M. Suzuki, collector, 4 specimen; Kushimoto, Izumo, Dec.
14, 1976, the same method, H. Misaki, collector, 1 specimen; the same locality, Dec. 15,
1976, the same method, H. Misaki, collector, 1 specimen; Kushimoto, Dec. 17, 1976, the
same method, H. Misaki, collector, 2 specimens; Kushimoto, Arita, 30m, Feb. 7, 1979, the
same method, K. Ikazaki, collector, 4 specimen; Kushimoto, Shionomisaki, Feb. 7, 1979,
the same method, H. Misaki, collector, 1 specimen; Kushimoto, Shionomisaki, 40m, Feb. 7,
1979, the same method, K. Ikazaki, collector, 2 specimens; Gokasho Bay, Hazama-ura, Mie
Prefecture, Aug. 16, 1979, 1 specimen; Kushimoto, Arita, Feb. 23, 1980, lobster gill-net, M.
Suzuki, collector, 1 specimen; Kushimoto, Oshima, Myougajima Islet, 20m, July, 16, 1980,
SCUBA diving, M. Suzuki, K. Ikazaki & Sh. Ui, collector, 1 specimen; Kushimoto,
Sabiura, aquarium tank, Dec. 20, 1980, H. Misaki, collector, 1 specimen; Sabiura, aquarium