• The Korean Journal of Zoology
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• v.32 no.1
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• pp.9-13
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• 1989

A study of benthic populations on a tidal flat near Inchon has revealed the presence of Amphictene japonica (Nilsson) a large pectinariid polychaete worm not previously documented in Korean waters. Near Inchon it is apparently restricted to silty sands or sandy silts along seaward parts of the intertidal flat. In addition to its large size, A. japonica is distinguished from other pectinariids by means of (1) the posterior rim of the cephalic plaque, which bears 20 to 25 marginal denticulations, and (2) the scaphal hooks, which number 19 to 24 on either side.