;"Henricia epiphysialis sp. nov.";"H. compacta (Sladen, 1889)";"H. densispina (Sladen, 1878)";"H. djakonovi Chichvarkhin, 2017";"H. exigua Hayashi, 1940";"H. kinkasana Hayashi, 1940";"H. leviuscula (Stimpson, 1857)";"H. regularis Hayashi, 1940";"H. reniossa Hayashi, 1940";"H. skorikovi Djakonov, 1950"
R/r;4.9–5.4;4.4–7.5;2.9–5.5;4.7–5.0;4.2–4.5;4.0–4.8;5.0–6.0;3.1–5.0;5.5–8.0;3.6–5.0
"Number of spines of abactinal plates";11–40;"up to 45";"30 or more";20–30;5–13;5–18;40–60;9–20;"15–60 or more";"up to 16"
"Shape of abactinal spines";"hooked crown";stout;granular;"stout, barrel, bullet tip";"slender, pointed tip";"fine, slender, pointed tip";"short, granular, solid glassy tip";"slender, pointed tip";"very fine, rough tip";"short, robust, thorny tip"
"Number of abactinal papulae";1–3;1–3;"1–3, rarely 5";"1 or 2";1–3;single;1–3;single;"1 or 2";2–6
"Shape of abactinal plates";"reniform with conspicuous epiphyseal ossicle";"crescentic, compact";subtriangular;"cross, oval, triangular, irregular";"elliptic, quasi-triangular, quasi-quadrate";crescentic;"elliptic, reniform, subquadrate";subquadrate;reniform;"slender, rod-like"
"Shape of actinal plates";"rounded cross, elongated cross";"quadrilobed, squarish";"elongated cross";"square pillow";"rounded cross, elongated cross";"rounded cross, elongated cross";"elongated cross, small rod-like";"rounded cross";"elongated cross, quasi-quadrate";"elongated cross, rod-like"
"Number of actinal papulae";single;single;single;single;single;single;single;single;"1 or 2";unknown
"Number of adambulacral spines";10–14;"5 or 6";11–16;"10 or 11";13–15;8–12;15–18;9–13;15–25;7–12
"Number of furrow spines";single;"2 or 3";single;single;double;single;single;"single or double";single;single
"Pattern of adambulacral spines (near ambulacral furrow + near ventrolateral plate)";"1 long, 2 slender, bluntly pointed + 4–14 slightly shorter";"2 or 3 prominent + 4–6 slightly shorter";"2 or 3 prominent, bluntly pointed + 4–16 slightly shorter";"2 or 3 larger + 4–11 slightly shorter";"1 long, 2 spatulate + 4–15 shorter";"1 long, 2 slender, bluntly pointed + 4–12 slightly shorter";"1 long, 3 stout + 5–18 slightly shorter";"1 long, 2 slender, bluntly pointed + 4–13 slightly shorter";"1 long, 5 slender + 7–25 slightly shorter";"1 long, 2 coarse + 4–12 slightly shorter"
Distribution;"Korea (East Sea)";"southern Australia";"Bohai Sea, Yellow Sea, Korea Strait, Tatar Strait, Kurile Island, Japan, Philippines";"Rudnaya Bay, Kievka Bay";"southern Japan, East China Sea";"Japan (off Kinkasan)";"Korea (East Sea), Alaska (Kadiak)";"East China Sea, Korea (East Sea, Korea Strait, Jeju Island), Japan (Goto Island, Uraga Channel)";"Korea (East Sea), Japan (Yezo Strait)";"White Sea, Barents Sea, Chesha Bay"