;"P. hispida sp. n.†";"P. densicostata (Locard, 1898)‡";"P. pilula (Pelseneer, 1911)§";"Policordia sp. (un–described)|" ;;; "Length (mm)";4.8;18;5.8;7.0 Length:Height;"L > H";"L < H";"L < H";"L = H" "Inhalant siphon tentacles";"18–19, thick, flattened, with 6–8 papillated extensions; 4 outer, smaller, simple conical tentacles";"22, all merged at base, each with 3–7 papillated lobes";Unknown;"23, thick, flattened, with 7 extensions; 4 outer, smaller, simple conical tentacles" "Exhalant siphon tentacles";"Conical, 1 dorsal, 4 lateral (left and right pairs)";"Conical, blunt with dense covering of papillae, 1 dorsal, 4 lateral (left and right pairs)";Unknown;"Conical, 1 dorsal, 4 lateral (left and right pairs)" Byssus;Present;Present;Unknown;Absent "Mantle glands";"~ 30; flask shaped without long cylindrical portion";"~ 30; flask shaped with long cylindrical portion";Unknown;"36–34 flask shaped without long cylindrical portion" "Shell sculpture";"30–32 radial periostracal lamellae (holotype)";"30–37 radiating lines of slightly raised ridges";"~ 30 radial hair like lines";"~ 30 radial lines" Distribution;"Eastern Pacific, Southern Californian Bight; 411–449 m";"Atlantic; 1007–2503 m¶";"West Pacific; 1301 m";"Northeastern Pacific, Gulf of Alaska; 1230–2980 m"