Forty-seven species of alpheid shrimp were collected bv the Dampier Archipelago Expedition in 1998-2002. Six species are report(;d for the tIrst tIme from northwestern Australia. The majority of the positively id~'ntified species (18, or 40'X,) range widely from the western Indian Ocea;) and Red Sea to the central Pacific Ocean. Seventeen species (38%) range from the western Indian Ocean into the western Pacific, six species (13%) range trom the eastern Indian Ocean into the western Pacific,

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... 4 (9'/0) range into the eastern Pacific. Three species of commensal shrimp were collected from corals and crinoids. Two species are strictly intertidal, 11 are strictly subtidal and 32 range from the lowest intertidai zone to subtidal depths. The majority of the shrimp inhabit areas of rocks, coral, shell or rubble, but A/pheus rapacida De Man, 1908 and A serenej Tiwari, 1963 typically live in sandy or muddy areas. We follow the systematic treatment of Chace (1988) and BaJ~ner and B,;nner (1973; 1975; 1982) 'for alpheids, but use a new subdivision, the" Alpheus annjJlatlls" subdivision of the Alphells edwardsh species group.