Chaetal arrangement of some namanereidins referred in this study. A Scheme showing the parapodial fascicles and their positions in relation to neuroaciculum B Neuropodial lobe of right parapodium from chaetiger 10 of Namalycastis occulta, showing the position of chaetae in type D species when mounted C–E Chaetal arrangement of types A, C and E, and their variants found in literature (modified from Glasby 1999, Fig. 1).