A new species of Abyssochrysos, A. xouthos n. sp. is described from south-w
est Oman in the northern Arabian Sea at a depth of 3150 metres. This repres
ents the first record of this genus from the northern Indian Ocean. Of the
five previously described extant species of Abyssochrysos A. xouthos is mos
t similar to A. melanioides from which it differs in radular and shell char
acters.