Henricia pacifica 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 : 13-14

Henricia pacifica Hayashi, 1940

Figures 10 A–F, 12I

Henricia pacifica Hayashi, 1940: 152 : pl. 9, figs 7–10.— Djakonov, 1958: 301; 1961: 16.— Hayashi, 1973: 79, pl. 13, fig. 2.

Material examined. East China Sea. One (R 36– 19 mm, r 4.8 mm, R: r 7.5–4.0), MBM175692, CN V580B-23, Stn. 13, 30°30ʹN,128°00ʹE, 365-395m, muddy sand, AT, coll. ZHANG, 1 Jul 1978;Two (R 31– 29 mm, r 5.2 mm, R: r 6.0–5.6; R 17– 14 mm, r 3.5 mm, R: r 4.9–4.0), MBM175701, CN V469B-79, Stn. V-11, 27 °30ʹN,126°00ʹE, 162m, fine sand, AT, coll. WU, 10 Oct 1975; One (R 51– 47 mm, r 7.0 mm, R: r 7.3–6.7), MBM176346, CN KY10B-82, Stn. Z -4, 28°40ʹN, 128°40ʹE, 1115m, soft mud, AT, 4 Aug 1981.

Distribution. East China Sea, Japan, and Sakhalin, 50–1115 m.

Remarks. This species is closely related to Henricia arcystata Fisher , but differs in each adambulacral plate bearing more numerous subadambulacral spines (on the plate surface) and a single furrow spine, not three furrow spines in a vertical series. Our specimens do not possess a short series of the secondary ventrolateral plate at the arm base. In addition, the present specimen extends the depth of the species to 1115 meters.

Figures

FIGURE 10. Henricia pacifica Hayashi. A, abactinal view; B, actinal view; C, abactinal ray; D, actinal ray; E, cleared abactinal ray; F, cleared actinal ray.