Juvenile specimens of the scavenging amphipod Pseudocallisoma coecum (Holmes, 1908) were recorded near the bases of the oral arms of the jellyfish Poralia rufescens Vanhöffen, 1902 in the Japan Trench. Video footage and sampling imply a high infection

The new lysianassoid amphipod family Sophrosynidae is described and the genus Sophrosyne is reviewed. Fourteen species are recognised including 10 new species and the documented distribution of the genus is expanded into the south-western Pacific. Sophrosyne

The new lysianassoid amphipod family Lepidepecreellidae is established and the genus Lepidepecreella is reported from Australian waters for the first time. The new species Lepidepecreella nellae sp. nov. is described.