Arcania gracilis (Henderson, 1893)

Arcania quinquespinosa — Serène & Vadon 1981: 124; Chen 1989: 208, pl. I 7; Tan 1996: 1022, 1028, figs. 2b–e, 7 f. Arcania gracilis — Galil 2001a: 184, figs. 2c, 5d; Komatsu et al. 2005: 106; Galil & Ng 2007: 86, fig. 1f.

Material examined. Off Aurora Province, eastern Luzon, Philippines: 1 3 (CL 11.1 mm) (NMCR), stn. CP 2760, 15º54.21’N 121º54.21’E, 100 m, 4 June 2007; 2 3 (CL 10.7, 11.5 mm) (MNHN-B31898), stn. CP 2761, 15º53.21’N 121º53.21’E, 79 m, 4 June 2007; 1 3 (CL 11.8 mm), 1 Ƥ(CL 14.8 mm), 2 Ƥ ovigerous (CL 14.7, 15.3 mm), 1 juvenile (ZRC 2009.0263), stn. CP 2762, 15º51.72’N 121º51.72’E, 66 m, 4 June 2007; 1 3 (CL 12.6 mm) (ZRC 2009.0264), stn. CP 2763, 15º51.04’N 121º51.04’E, 44 m, 4 June 2007; 1 Ƥ ovigerous (CL 14.9 mm) (ZRC 2009.0265), stn. CP 2764, 15º49.82’N 121º36.08’E, 45 m, 4 June 2007.

Distribution. Red Sea, Madagascar, Persian Gulf, Laccadive Is., India, Sri Lanka, Japan, China, Philippines, Singapore, Indonesia, Australia, Vanuatu, New Caledonia (Galil 2001a; Galil & Ng 2007).