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nereis n.(pl. nereides ) 沙蠶屬動物。

neritic

The ratio of planocera reticulata , pheretima tschiliensis and nereis pelagica was 19 . 00 % , 20 . 13 % and 12 . 82 % . the conclusion of this study is the animal with strong motor ability and developed sense organ has little neuron body and more neuropil in ganglion 甲殼綱動物神經元胞體占神經節的比例最小(蝦蛄和平背蜞神經元胞體所占神經節的比例分別為11 . 43和15 . 53 ) 。