Pontoniinid Shrimps from the Ninth Cruise of R/V Anton Bruun, IIOE, 1964, II. The Remaining Genera

The description of a collection of pontoniinid shrimps made in the western Indian Ocean in 1964 is completed. Twenty-four species of 14 different genera are represented. A detailed description and illustrations of the only new species, Periclimenaeus spinimanus, are provided and, in addition, the earlier misidentification of Periclimenes consobrinus is corrected. All species are considered to be “commensals” of other marine invertebrates and where possible the bosts are identified. Periclimeneaus minutus is recorded from the Indian Ocean for the first time. The host animals and geographical distribution of the species collected are briefly reviewed and most species are known to occur throughout the Indo-West Pacific region, although 18% are known only from the western Indian Ocean.