A new anomuran crustacean, Galathea patae n. sp., is described on the basis of a single specimen from the Ryukyu Islands, Japan. The new species seems to be unique among species of Galathea Fabricius, 1793 in having non-setiferous transverse ridges on the carapace and relatively short merus of the third maxilliped. The elongate ocular peduncles possessed by G. patae n. sp. are rather unusual among species of the genus, and may be similar to those of species of Fennerogalathea Baba, 1988 and Lauriea Baba, 1971.
Crustacea, Decapoda, Anomura, Galatheidae, Galathea, Japan, new species.