Orbiniella sp. SEM A specimen ZMBN 157696, anterior end, ventral view B specimen ZMBN 157696, detail of prostomium and peristomium C specimen ZMBN 157667, notopodium of chaetiger 6 showing notopodial lobe, acicular spine, and capillaries D specimen ZMBN 157696 Neuropodium of chaetiger 10 showing acicular spines E specimen ZMBN 157666, notopodia of chaetigers 5 and 6 showing notopodial lobe, acicular spines, and capillaries F specimen ZMBN 157666, detail of capillary chaetae. White arrows in E: Start of crenulation in capillary chaeta. Abbreviations: Ac: acicular spines; Np: notopodial lobe. Scales: 100 μm (A, B, E); 20 μm (C, D); 10 μm (F).