Nоtоplax hilgendоrfi Тhiele 1909 : 40 Таki 1962 : 37 Таki 1964 : 412 Вelle 1980 : 59 Sаito 1995 : 108 Taiwanese deep-water chitons (Mollusca: Polyplacophora) and survey of chiton fauna of Taiwan Sirenko, Boris Zootaxa 2018 4422 3 301 344 47XVN Thiele, 1909 Thiele 1909 [151,563,1833,1859] Polyplacophora Acanthochitonidae Notoplax GBIF Animalia Chitonida 35 336 Mollusca species hilgendorfi      Nоtоplax hilgendоrfi Тhiele 1909: 40, pl. 5, figs 39–44; Is.  Таki 1962: 37; Iw.  Таki 1964: 412; Kааs & Vаn  Вelle 1980: 59;  Sаito 1995: 108, fig. 9; 1997: 55, pl. 2, fig. 9; 2000: 21, pl. 10, fig. 4; 2001: 116 (synonymy); 2005: 110.   Type material.Holotype (ZMB Moll. 102032)    Typelocality. Hakodate, Hokkaido, Japan  Material examined.NE coast of Taiwan, off Tashi, Fishing Boat Chung Tung Long No. 26, ” TAIWAN2001”, stn CP91, 24°50.6′N, 122°01.4′E, 400 m, 1 spms, BL 12.0 mm, 10.05.2001   Distribution. Japan, from Hakodate to Amami-Oshima Islandand Taiwan, 5–450 m( Saito 2005).   Remarks.The Taiwanspecimen (stn CP91, BL 11.0 mm) has the slit formula 5/1/6 (without rays), seven gills on each side extending from valve VI to valve VII; its radula is 3.0 mm long with 23 transverse rows of mature teeth. The girdle is wide, densely covered with slightly flattened sharply pointed needles of different size from 20 µm up to 180 µm and sutural tufts of up to 25 straight, smooth needles attaining 500 µm. Marginal needles are similar to needles of the tufts, the ventral side paved with flattened sharply pointed needles c. 90 µm. 1845064161 [199,674,1891,1916] Japan Hakodate 36 337 1 Hokkaido holotype