I am indebted to Mr. F. H. Gravely, Assistant Superintendent in the Indian Museum, for an interesting note regarding the food of _Plumatella_. His observations, which were made in Northamptonshire, were unfortunately interrupted at a critical moment, but I have reproduced them with his consent in order that other observers may investigate the phenomena he saw. Mr. Gravely noted that a small green flagellate which was abundant in water in which _Plumatella repens_ was growing luxuriantly, was swallowed by the polypides, and that if the polyparium was kept in a shallow dish of water, living flagellata of the same species congregated in a little pile under the anus of each polypide. His preparations show very clearly that the flagellates were passing through the alimentary canal without apparent change, but the method of preservation does not permit the retractile granules, which were present in large numbers in the cell-substance of the flagellates, to be displayed and it is possible that these granules had disappeared from those flagellates which are present in the recta of his specimens. It is clear, therefore, either that certain flagellates must pass through the alimentary canal of _Plumatella_ unchanged, or that the polyzoon must have the power of absorbing the stored food material the flagellates contain without doing them any other injury. The free statoblasts of _Plumatella_ are as a rule set free before the cells they contain become differentiated, and float on the surface of the water for some time before they germinate; but occasionally a small polypide is formed inside the capsule while it is still in its parent zooecium. I have, however, seen only one instance of this premature development, in a single statoblast contained in a small zoarium of _P. fruticosa_ found in Lower Burma in March. The fixed statoblasts usually remain fixed to the support of the zoarium, even when their parent-zooecium decays, and germinate _in situ_. The larva (fig. 40 C, p. 207) that originates from the egg of _Plumatella_ is a minute pear-shaped, bladder-like body covered externally with fine vibratile threads (cilia) and having a pore at the narrow end. At the period at which it is set free from the parent zooecium it already contains a fully formed polypide or pair of polypides with the tentacles directed towards the narrow end. After a brief period of active life, during which it moves through the water by means of its cilia, it settles down on its broad end, which becomes adhesive; the polypide or pair of polypides is everted through the pore at the narrow end, the whole of this end is turned inside out, and a fresh polyparium is rapidly formed by budding. 29. Plumatella fruticosa, _Allman_. (Plate III, fig. 1; plate IV, fig. 4; plate V, fig. 1.) _Plumatella fruticosa_, Allman, Ann. Nat. Hist. xiii, p. 331 (1844). _Plumatella repens_, van Beneden (? _nec_ Linné), Mém. Acad. Roy. Belg. 1847, p. 21, pl. i, figs. 1-4.