Amphipoda, Isopoda and Tanaidacea collected by members of the Victoria University College Zoology Department from the Cook Strait area are recorded and described. One new species of the amphipod genus Epimeria is described together with new species of the isopod genera Cirolana, Rocinela, Jaeropsis and Pseudidothea. Species of Astacilla and Iathrippa (Isopoda) are redescribed.