Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia Collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 2. Timor Sea Author Islam, Atikul Author Banerjee, Abhishek Author Wati, Sisca Meida Author Banerjee, Sumita Author Shrivastava, Deepti Author Srivastava, Kumar Chandan text Bulletin of the National Museum of Nature and Science. Series A, Zoology 2022 2022-02-22 48 1 5 24 http://dx.doi.org/10.4103/jpbs.jpbs_1287_23 journal article 299034 10.50826/bnmnszool.48.1_5 75026286-ffe2-4545-be4b-6212ec4f0964 2434-091X 12571350 Trichopeltarion alcocki Doflein , in Chun, 1903 ( Fig. 8D ) Material examined . RV Hakuhō Maru KH-72-1 cruise, sta. 33 (Off Sahul Shelf, 12°42.2′S, 123°07.6′E–12°42.0′S, 123°08.5′E, 535–547 m depth), 3 m beam trawl; June 26, 1972 ; 1 ♀ (NSMT-Cr 29269: CB 18.8 mm excluding lateral spines, CL 22.0 mm excluding rostrum). Fig. 7. Samadinia soela (Griffin and Tranter) , male (NSMT-Cr 29267: CB 5.8 mm excluding branchial spines×CL 9.8 mm excluding pseudorostral spines) from sta. 26 (Timor Sea, 610–690 m deep). G1 in pleonal view (A) and distal part of the same in sternal view (B). Scales=1 mm. Remarks . Among 23 Trichopeltarion species listed by Tavares and Cleva (2010) , T. alcocki Doflein , in Chun, 1903 is one of the rarest species, with only few specimens known from the depths of the West Pacific. The identification, however, is not difficult owing to the extensive illustrations provided by the original author (1903, unnumbered figure; 1904, pl. 28 figs. 4–5, as Trichopeltarium ), Guinot (1989 , figs. 1, 8, pl. 1 figs. A–F, as Trachycarcinus ), and Tavares and Cleva (2010 , figs. 12–13, 14A). This species is close to T. ovale Anderson , 1896, ranging from Japan to Sri Lanka through Taiwan , the Philippines and Indonesia , 100– 928 m depth , but the ambulatory legs are distinctly longer and more slender. Otherwise, Tavares and Cleva (2010) reproduced the photograph of the holotype female and mentioned that the merus–carpus articulation of the last ambulatory leg almost reaches the second epibranchial tooth (lying well before the second tooth in T. ovale ). Distribution . The type locality is the Siberut Strait, west of Sumatra , Indonesia , at 750 m depth. The other known localities are the Philippines, 1030–1650 m depth, and Taiwan ; 718– 852 m depth.