1. XVIII.—On the chylaqueous fluid in the Actinoida: XX.—Characters and descriptions of some new British Sea-Anemones: XX.—On Edwardsia carnea, a new British zoophyte: XX.—On the sloughing of the Spider-Crab (Maia Squinado) XXIV.—On keeping marine animals and plants alive in unchanged sea-water: XXIX.—On Sarcodictyon catenata (Forbes)