Six species of Axiidea and Gebiidea from the Indo-West Pacific (Crustacea, Decapoda)

Collections held by the Muséum national d’Histoire naturelle until now unstudied contain six species of Axiidea de Saint Laurent, 1979 and Gebiidea de Saint Laurent, 1979 from the Indo-west Pacific. Three species of Callianassidae Dana, 1852 are new: Calliax tulearensis n. sp., and Calliaxina thomassini n. sp. from Madagascar and Callianassa coriolisae n. sp. from the Philippines. Neocallichirus audax (de Man, 1911), Axianassa ngochoae Anker, 2010 and Gebiacantha richeri Ngoc-Ho, 1989 are reported for the first time from Vietnam. The new species are described and morphological variabilites in the others are discussed.