Abstract
Three species of Indo-West Pacific pontoniine shrimp from the collection of the Zoological Museum, Copenhagen, have been examined. Two of the species were found to be new, Periclimenaeus mortenseni sp. nov. and P. wolffi sp. nov., from the Kei Islands, Indonesia, and off south west Taiwan, respectively, and are described and illustrated. Remarks, with illustrations, on little known, closely related species, Periclimenaeus pachydentatus Bruce 1969 and P. tridentatus (Miers, 1884), are also included. Platycaris latirostris Holthuis 1952, is recorded from Mauritius for the first time.