Henricia regularis Hayashi, 1940

Xiao, Ning, Liao, Yulin & Liu, Ruiyu, 2011, Records of the genus Henricia Gray, 1840 (Echinodermata: Asteroidea: Echinasteridae) from Chinese waters, Zootaxa 3115, pp. 1-20 : 15-16

Henricia regularis Hayashi, 1940

Figures 11 A–F, 12 E

Henricia regularis Hayashi, 1940: 137 , pl. 10, figs 3, 4.— Shin & Rho, 1996: 335, pl. 23, figs a–h.

Material examined. East China Sea. Two (R 29 – 24 mm, r 7.1 mm, R: r 4.1 – 3.4; R 24 – 20 mm, r 5.4 mm, R: r 4.4 – 3.7), MBM 175712, CN V 560 B- 9, Stn. 0 2, 32° 30 ʹN, 127 °00ʹE, 120m, fine sand, AT, coll. ZHANG, 29 May 1978; Two (R 23 – 20 mm, r 5.5 mm, R: r 4.2 – 3.6; R 25 – 20 mm, r 5.9 mm, R: r 4.2 – 3.4), MBM 175699, CN V 471 B- 63, Stn. -9, 27° 30 ʹN, 125 °00ʹE, 106m, fine sand, AT, 10 Oct 1975; One(R 25 – 21 mm, r 6.7 mm, R: r 3.7 – 3.1), MBM 175705, CN V 470 B- 26, Stn. -10, 27° 30 ʹN, 125 ° 30 ʹE, 110m, fine sand, AT, coll. WU, 10 Oct 1975; One (R 37 – 32 mm, r 8.8 mm, R: r 4.2 – 3.6), MBM 175710, CN V 563 B- 7, Stn. 22, 28° 30 ʹN, 126 °00ʹE, 116m, fine sand and shell, AT, coll. TANG & WU, 5 Jun 1978; One (R 28 – 23 mm, r 7.1 mm, R: r 3.9 – 3.2), MBM 176355, CN KY 6 B- 61, Stn. Z -7, 26° 40 ʹN, 124 °00ʹE, 147m, AT, 9 Jul 1981; Five (R 30 – 27 mm, r 7.7 mm, R: r 3.9 – 3.5; R 26 – 21mm, r 6.2 mm, R: r 4.2 – 3.4; R 24 – 21mm, r 6.2 mm, R: r 3.9 – 3.4; R 24 – 22 mm, r 6.0 mm, R: r 4.0– 3.7; R 21 – 16 mm, r 5.2 mm, R: r 4.0– 3.1), MBM 175709, CN V 499 B- 94, Stn. -6, 27° 30 ʹN, 125 ° 30 ʹE, 112m, fine sand, AT, 5 May 1976; One (R 40 – 37 mm, r 8.5 mm, R: r 4.7 – 4.4), MBM 175717, CN V 495 B- 64, Stn. -5, 28° 30 ʹN, 125 ° 30 ʹE, 110m, AT, coll. ZHANG, 4 Jul 1976; One (R 24 – 22 mm, r 6.1 mm, R: r 3.9 – 3.6), MBM 175696, CN V 577 B- 84, Stn. 17, 29° 30 ʹN, 127 °00ʹE, 117m, fine sand, AT, coll. LIU, 29 Jun 1978; One (R 54 – 52 mm, r 11.8 mm, R: r 4.6 – 4.4), MBM 176191, CN V 489 B- 88, Stn. -4, 29° 30 ʹN, 125 °00ʹE, 82m, muddy sand, AT, coll. TANG & XU, 27 Jun 1976; One (R 51 – 48 mm, r 11.4 mm, R: r 4.5 – 4.2), MBM 175721, CN V 474 B- 80, Stn. -5, 27° 30 ʹN, 123 °00ʹE, 90m, fine sand, AT, coll. TANG & WU, 11 Oct 1975; Fourteen (R 37 – 33 mm, r 9.2 mm, R: r 4.0– 3.6; R 31 – 28 mm, r 7.7 mm, R: r 4.0– 3.6; R 38 – 37 mm, r 8.9 mm, R: r 4.3 – 4.2; R 41 – 36 mm, r 9.5 mm, R: r 4.3 – 3.8; R 37 – 33 mm, r 9.2 mm, R: r 4.0– 3.6; R 33 – 31 mm, r 8.6 mm, R: r 3.8 – 3.6; R 33 – 30 mm, r 8.1 mm, R: r 4.1 – 3.7; R 38 - 35 mm, r 9.0 mm, R: r 4.2 – 3.9;R 41 – 35 mm, r 9.2 mm, R: r 4.5 – 3.8; R 31 – 27 mm, r 8.1 mm, R: r 3.8 – 3.3; R 36 – 35 mm, r 8.9 mm, R: r 4.0– 3.9; R 41 – 38 mm, r 8.4 mm, R: r 4.9 – 4.5; R 27 – 19 mm, r 5.4 mm, R: r 5.0– 3.5; R 41 – 32 mm, r 6.0 mm, R: r 6.9 – 5.3), MBM 176422, CN V 519 B- 160, Stn. -3, 27° 30 ʹN, 124 °00ʹE, 105m, fine sand, AT, coll. TANG, 27 Aug 1976; Two (R 30 – 29 mm, r 7.7 mm, R: r 3.9 – 3.8; R 26 – 18 mm, r 5.8mm, R: r 4.5 – 3.1), MBM 175720, CN V 500 B- 57, Stn. -4, 27° 30 ʹN, 124 ° 30 ʹE, 99m, gravel and shell, AT, coll. TANG & WU, 5 Jul 1976; Three (R 29 – 27 mm, r 6.7 mm, R: r 4.3 –4.0; R 32 – 29 mm, r 8.1 mm, R: r 4.0– 3.6; R 30 – 27 mm, r 7.6 mm, R: r 3.9 – 3.6), MBM 175722, CN V 496 B- 46, Stn. -6, 28° 30 ʹN, 126 °00ʹE, 115m, AT, coll. LIU, 4 Jul 1976; Four (R 31 – 27 mm, r 6.8 mm, R: r 4.6 –4.0; R 29 – 25 mm, r 7.4 mm, R: r 3.9 – 3.4; R 31 – 28 mm, r 7.4 mm, R: r 4.2 – 3.8; R 31 – 28 mm, r 7.1 mm, R: r 4.4 – 3.9), MBM175723, 26 Oct 1978; Two (R 27 – 23 mm, r 7.0 mm, R: r 3.9 – 3.3; R 25 – 23 mm, r 6.2 mm, R: r 4.0– 3.7), MBM 175715, CN V 570 B- 22, Stn. 30, 26° 10 ʹN, 124 °00ʹE, 138m, fine sand, AT, coll. ZHANG, 11 Jun 1978; Thirteen (R 40 – 33 mm, r 10.3 mm, R: r 3.9 – 3.2; R 37 – 34 mm, r 8.9 mm, R: r 4.2 – 3.8; R 36 – 33 mm, r 8.6 mm, R: r 4.2 – 3.8; R 32 – 31 mm, r 7.8 mm, R: r 4.1 –4.0; R 34 – 33 mm, r 8.9 mm, R: r 3.8 – 3.7; R 33 – 32 mm, r 8.8 mm, R: r 3.8 – 3.6; R 32 – 28 mm, r 7.4 mm, R: r 4.3 – 3.8; R 32 – 29 mm, r 6.8 mm, R: r 4.7 – 4.3; R 37 – 33 mm, r 9.0 mm, R: r 4.1 – 3.7; R 33 – 31 mm, r 8.8 mm, R: r 3.6 – 3.5; R 36 – 34 mm, r 8.0 mm, R: r 4.5 – 4.25; R 31 – 29 mm, r 8.5 mm, R: r 3.6 – 3.4; R 29 – 28 mm, r 7.2 mm, R: r 4.0– 3.9), MBM 175714, CN V 472 B- 38, Stn. -8, 27° 30 ʹN, 124 ° 30 ʹE, 100m, fine sand, AT, 19 Oct 1975; One (R 41 – 39 mm, r 9.1 mm, R: r 4.5 – 4.2), Dry specimen, CN 220 B- 30, Stn. 4050, 30°00ʹN, 123 ° 30 ʹE, 61m, muddy sand, BT, 4 Feb 1959; One (R 49 – 43 mm, r 11.5 mm, R: r 4.3 – 3.7), Dry specimen, CN P 144 B- 30, Stn. 4081, 28°00ʹN, 122 ° 30 ʹE, 79m, muddy sand, 9 Dec 1959; One (R 57 – 50 mm, r 12.9 mm, R: r 4.4 – 3.9), Dry specimen, CN 240 - 34, Stn. 4082, 28°00ʹN, 123 °00ʹE, 86m, muddy sand, 4 Apr 1959.

Distribution. East China Sea, Korea, Japan, 61– 200 m.

Remarks. This species is distinctive in having large abactinal plates (plate area bigger than popular area), generally uniform in size and subquadrate in form, arranged in rather regular oblique transverse rows ( Hayashi 1940). In our specimens morphology of abactinal plates ( Fig. 11 E), the number of spinelets and a single papula ( Fig. 11 E) in abactinal papular areas correspond well with the original description. The observed differences are the following: the holotype has a single series of ventrolateral plate while our specimens occasionally possess a short series of the secondary ventrolateral plate at the arm base; the holotype has 13 to 17 subadambulacral spines while our specimens sometimes possess 9 to 13 subadambulacral spines. We do not regard the presence or absence of the secondary ventrolateral plate as a reliable diagnostic character.