XXIII. PRELIMINARY NOTE ON A NEW GENUvS OF PHYLACTOL.^MATOUS P O I. Y Z O A . &^ By N. Annandale, D.Sc, Superintendent, Indian Museum. The first specimens of the new genus were sent to the Indian Museum b}^ Major H. J. Walton, I.M.S., from Bulandshahr in the United Provinces, but others have recentl}^ been found in the outskirts of Calcutta by Mr. B. L. Chaudhuri and myself. StoleIvLA, gen. nov. Phylactoleematous Polyzoa with horse-shoe-shaped lophophores and small statoblasts(both free and fixed) resembling those of Plumatella ; the zoarium consisting of groups of upright zooecia (or occasionally single zocecia) joined together by an adherent pseudostolon in a linear series, the pseudostolon consisting of a prolongation in one direction of the base of one of the zooecia ; no gelatinous investment S.12 present. Stolella indica, sp. nov. Ectocyst of zooecia and pseudostolon soft, colourless and transparent but minutely roughened on the external surface. Zooecia short, slender, more or less cask-shaped, generally more slender at the tip than at the base, emarginate at the distal end on one side and with a furrow running down from the emargination. Daughter zooecia arise as buds at the sides of a parent zooecium, the base of which is produced anteriorly into a tubular outgrowth of very variable length. This forms the pseudosto-lon, at the extremity of which a new parent zooecium is produced; it is generally more slender either at the distal or the proximal end than at the other, and in young colonies StoUlia utdica on ^^ o^tcn somcwhat difficult to detect. The stem of water plant. pseudostolon is not distinctly marked oft from the zooecium.