FIGURE 5 in Euryalid brittle stars from the International Indian Ocean Expedition 1963 - 64 (Echinodermata: Ophiuroidea: Euryalida)

FIGURE 5. Asteronyx luzonicus (USNM 1072474) (A–C) and Astroboa clavata (USNM 1072477) (D–J). A, aboral disc; B, lateral disc; C, basal portion of the arm; arrows indicate elongated club-shaped arm spines; D, aboral view; E, oral view; F, aboral peripheral disc; G, external ossicles on a peripheral radial shield; H, oral basal portion of the arm; I, aboral middle portion of the arm; J, aboral distal portion of the arm.