The pontoniine shrimp, Periclimenes adularans Bruce, 2003, previously known only by its type specimens from Australia, is recorded on the basis of some recently collected specimens from the East China Sea coast of Kyushu and the Ryukyu Islands, Japan as well as from the southwestern coast of Taiwan. The species' coloration in life is reported for the first time. Although the host species of P. adularans has not previously been recorded, the present study shows that this shrimp is associated with sea anemones, viz., Cerianthus filiformis Carlgren, 1922 and Megalactis hemprichii Ehrenberg, 1834. Supplementary morphological information on P. adularans is also given. [ABSTRACT FROM AUTHOR]