Figs. 4, 4 _a_. Specimens of _L. carteri_ from Igatpuri Lake, Bombay, preserved in formalin. Fig. 4 represents a mass of polyparia surrounded by a green gelatinous alga on the stem of a water-plant; fig. 4_a_ an isolated polyparium with the polypides fully expanded from the under surface of a stone in the same lake. Both figures are of natural size. Fig. 5. Part of a compound colony of _P. burmanica_ on the stem of a reed from the Sur Lake, Orissa (nat. size, preserved in formalin). [Illustration: Phylactolaematous Polyzoa. Plate III. Photo by A. Chowdhary. Plumatella, Lophopodella, Pectinatella.] PLATE IV. SPECIMENS OF _Plumatella_. Fig. 1. Vertical branch of a polyparium of _P. emarginata_ from Calcutta, to show method of branching (× 8). The specimen was preserved in formalin, stained with hæmalum, and after dehydration and clearing, mounted in canada balsam. Fig. 1 _a._ Part of a young, horizontal zoarium of _P. emarginata_ from Rangoon (× 4, preserved in spirit). Fig. 2. Part of a zoarium of _P. diffusa_ from Gangtok, Sikhim (× 4). See Pl. III, fig. 3. Figs. 3, 3 _a._ Specimens in spirit of _P. allmani_ from Bhim Tal (lake), W. Himalayas. Fig. 3 represents a mature polyparium; fig. 3 _a_ a young polyparium to which the valves of the statoblast (×) whence it had arisen are still attached. Fig. 4. Part of a zoarium of the _coralloides_ phase of _P. fruticosa_ (from Calcutta) preserved in spirit, as seen on the surface of the sponge in which it is embedded (× 3). Fig. 5. Part of the margin of a living polyparium of _P. punctata_ from Calcutta (× 8) with the polypides fully expanded. [Illustration: Phylactolaematous Polyzoa. Plate IV. A. C. Chowdhary, del. PLUMATELLA.] PLATE V. SPECIMENS OF _Plumatella_, _Stolella_, AND _Pectinatella_. Fig. 1. Part of a zoarium of the _coralloides_ phase of _P. fruticosa_ (× 10) from Calcutta. The specimen, which was preserved in spirit, had been removed from a sponge of _Spongilla carteri_. Fig. 2. Terminal branch of a polyparium of _P. punctata_ from Calcutta (× 30). The specimen was preserved in formalin, stained with hæmatoxylin, and finally mounted in canada balsam. Fig. 3. Part of an adult polyparium of _S. indica_ from the United Provinces (× 30). The specimen was preserved in formalin, stained with hæmalum, and finally mounted in canada balsam. The lower zooecium contains a mature free statoblast, the upper one a fixed one. Fig. 4. The growing point of a young polyparium of the same species from Calcutta (× 30), to show the method of formation of the stolon that connects the different groups of zooecia. The specimen had been treated in the same way as that represented in fig. 3.