Abactinal plate of each arm contains granules and blunted small spines and pedicellariae.
Five plates delimit a pentagon (the primary interradial plates) in the central region of the
abactinal surface, with one plate in the center of the pentagon (the central plate) (Fig.
Esqueleto
abactinal (aboral) reticulado, poco calcificaos.
forbesi, and the long slender
abactinal spines with a wreath of minor pedicellariae halfway up these spines typical of A.