A new genus, Crosnierita, is established for three species of galatheid crustaceans: C. dicata n.sp., Munida urizae Macpherson, 1994 and M. yante Macpherson, 1994, the latter two having been transferred to the genus Agononida. The new genus is characterized by the absence of male pleopods on the first abdominal segment, the frontal margin deeply concave, the lateral margin of the basal antennular segment bearing two spines in addition to the distal spines, the third and fourth segments of the antennal peduncle reduced in size and the merus of the third maxilliped very short. All these characters suggest that the new genus approaches Bathymunida Balss, 1914 and its relatives.
Crustacea, Decapoda, Galatheidae, Crosnierita, new species, Pacific Ocean.