Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 1. Sulu Sea and Sibutu Passage Author Takeda, Masatsune Department of Zoology, National Museum of Nature and Science, 4 - 1 - 1 Amakubo, Tsukuba, Ibaraki 305 - 0005, Japan E-mail: takeda @ kahaku. go. jp (MT) / h-komatu @ kahaku. go. jp (HK) takeda@kahaku.go.jp Author Ohtsuchi, Naoya International Coastal Research Center, Atmosphere and Ocean Research Institute, The University of Tokyo, 1 - 19 - 8 Akahama, Otsuchi, Iwate 028 - 1102, Japan E-mail: ohtsuchi @ g. ecc. u-tokyo. ac. jp ohtsuchi@g.ecc.u-tokyo.ac.jp Author Komatsu, Hironori Department of Zoology, National Museum of Nature and Science, 4 - 1 - 1 Amakubo, Tsukuba, Ibaraki 305 - 0005, Japan E-mail: takeda @ kahaku. go. jp (MT) / h-komatu @ kahaku. go. jp (HK) takeda@kahaku.go.jp text Bulletin of the National Museum of Nature and Science. Series A, Zoology 2021 2021-05-21 47 2 65 97 journal article 10.50826/bnmnszool.47.2-65 2434-091X 12759907 09E0EFF3-ABE7-43D7-AA85-DA3BF08E47B9 Platymaia remifera Rathbun, 1916 ( Fig. 12F ) Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 11 ( Sulu Sea ; 08°12.7′N , 117°59.6′E – 08°11.8′N , 117°58.5′E ; 285–306 m deep); 3 m beam trawl; 26 May, 1972; 1 ˁ ( CB 29.4 mm ; CL 27.4 mm including rostral spine), 1˂ (ovig.) ( CB 37.1 mm ; CL 35.6 mm ), NSMTCr 28976; 1 ˂ ( Fig. 10F ) ( CB 31.6 mm ; CL 28.7 mm ), NSMT-Cr 28977 . RV Hakuhō Maru KH-72-1 cruise, sta. 12 ( Sulu Sea ; 08°19.0′N , 118°09.1′E – 08°18.7′N , 118°08.5′E ; 495–500 m deep); 3 m beam trawl; 26 May, 1972; 6 ˁˁ ( CB 9.2 mm ; CL 8.4 mm – CB 21.8 mm ; CL 20.1 mm ), 6˂˂ ( CB 9.9 mm ; CL 9.3 mm – CB 21.5 mm ; CL 19.3 mm ), NSMTCr 28992 . Remarks . The genus Platymaia is comprised of 10 species from Indo-West Pacific ( Griffin and Tranter, 1986 ; Ng et al. , 2008 ). We have many specimens of various sizes (CB 9.2–37.1 mm ), which agree well with the description by Guinot and Richer de Forges (1986) . Lee et al. (2017) recently recorded P. aff. remifera from the South China Sea, noting that the interior border of the branchial region is armed with three strong spines in the South China Sea specimens and five weak spines in the Taiwanese specimens. Based on our specimens, however, this character seems variable. There is one strong spine followed by one to four spines of variable distinctness. Distribution . Philippines ( Guinot and Richer de Forges, 1986 ; this study), Taiwan ( Ng and Huang, 1997 ), and South China Sea ( Serène and Lohavanijaya, 1973 ); 100–700 m deep.