Some Small Collections of Alpheid Shrimp from the Indian Ocean, Including Two New Species

Some small collections of alpheid shrimp resulting from the participation of the United States research vessels in the International Indian Ocean Expeditions are reported: 53 species in six genera were collected, with many of the collection records extending the known range of the various species within the Indian Ocean. Two new species are described from the deeper sublittoral zone: Synalpheus cretoculatus from off the southern tip of Burma and Synalpheus somalia from the oceanic coast of Somalia near the Gulf of Aden. . INCIDENTAL TO THE American participation in the International Indian Ocean Expeditions in 1962-1964, small collections were made of alpheid shrimp, some by dredging but mostly by shore collecting. These collections, contaiping about 450 individual specimens intact enough for identification, and representing 53 species in six genera, were made available to us by the Smithsonian Oceanographic Sorting Center. Many of these specimens represent new records for zoogeography, and two new deeper-water species of the genus Synalpheus were included in the specimens.