Abstract
The distribution of two species of fan lobster, Ibacus ciliatus ciliatus and I. novemdentatus, was examined, based on trawl surveys in the East China Sea. The both species occured zonally in the shelf of 33° N to 26° N along the shelf edge. Area of high abundance was in the waters north of 31° N for I. c. ciliatus and south of 29°30′ N for I. novemdentatus. I. c. ciliatus inhabited mostly in the areas of 120m and deeper, compared with I. novemdentatus in the areas of 100-120m depth.
