Arcania gracilis Henderson, 1893 Fig. 1C

Material examined.

1 juvenile male (7.7 × 5.5 mm), 7°16.713'N, 77°37.582'E, 200 m.

Remarks.

The genus was revised by Galil (2001) who confirmed that the two Indian Ocean species, Arcania quinquespinosa Alcock & Anderson, 1894, and A. gracilis Henderson, 1893, are subjective synonyms. The species has a wide distribution in India and the Indo-West Pacific (see Galil 2001; Trivedi et al. 2018).