Amphigymnas Walsh 1891

GenusAmphigymnasWalsh, 1891 Diagnosis. Body wall calcareous, brittle, similar to that of the elasipodid family Deimatidae. Mouth ventral, peltate tentacles 20. Dorsal and lateral body with long conical calcareous papillae, including a ventrolateral series. Body flat ventrally, tube feet in ambulacral series or scattered. Anus subdorsal posterior. Ossicles in body wall large table discs with many perforations, discs variably with or lacking spires often comprising three or four pillars, sometimes with more fused pillars, without distal spines or teeth, spires sometimes reduced to short unconnected pillars [adapted from O’Loughlin et al. 2013: 38]. Type species. Amphigymnas multipes Walsh, 1891 accepted as Amphigymnas woodmasoni (Walsh, 1891). Type locality. Indian Ocean, Andaman Sea, off Dyer Point and North Cinque Island, depth 343– 402 m.