Order Euryalida (Echinodermata, Ophiuroidea), new species and new records from the South China Sea and the Northwest Pacific seamounts

Asteroschema tubiferum Matsumoto, 1911 (IDSSE-EEB-SW0078) A dorsal view B ventral view C dorsal disc D skin on the arm E lateral disc F ventral disc G dorsal arm (proximal) H dorsal arm (middle) I ventral arm (proximal) J outer arm spine (proximal) K arm spines (middle) L arm spines (distal). Abbreviations: as adoral shield, ars arm spine, go granular ossicle, gs genital slit, iars inner arm spine, j jaw, oars outer arm spine, rs radial shield, t teeth, tp tentacle pore. Scale bars: 2 mm (A, B); 1 mm (E–G, I); 500 µm (C, H, J, K); 200 µm (D, L).