"Parapodium of "Heteronereis" of Nereis pelagica. 1, 2, 3, 4, the leaf-like outgrowths; c1., notopodial cirrus; c2., neuropodial cirrus; a1., a2., acicula or supporting bristles of notopodium and neuropodium; s., setae." -Thomson, 1916

N. Pelagica

"Parapodium of "Heteronereis" of Nereis pelagica. 1, 2, 3, 4, the leaf-like outgrowths; c1., notopodial…