Published online by Cambridge University Press: 11 September 2014
Three brachyuran species of the family Xanthidae, Atergatis ocyroe, Macromedaeus voeltzkowi and Macromedaeus quinquedentatus are recorded from the Iranian coast of the Gulf of Oman. These specimens were collected in 2009 and 2010 from the Iranian waters of the Gulf of Oman. Among these species, A. ocyroe is a new record for the Gulf of Oman and M. quinquedentatus is a new record for the Iranian coast. This is the second record of M. voeltzkowi from the Iranian coast, whereas there is still no record from the Arabian coast of the Gulf of Oman. The diagnostic characteristics of the species and some taxonomic remarks are reported upon in this paper.