146 N. AnnandaLE : A Polyzoon from the Himalayas. [VOL. I, 



in breadth, and the same in vertical length. The cavities in 

 which the polypides were contained terminated bluntly below. 

 All the statoblasts found in situ were rounded or truncate at the 

 extremities, one end being often blunter than the other. As a 

 rule they bore no processes or projections of any sort, but the 

 whole structure was slightly curved, so that the one face was 

 convex, the other concave ; the sides were not folded in towards 

 either face ; the annulus projected very little from the surface, 

 and the whole structure was very thin. 



In a few of the statoblasts still in position in the colonies a 



Fig. I. Fig. 3. Fig. 2. 



Figs, i and 2 =statoblasts of L. ledenfeldi var. hinialayanus, x 42. Fig. 3 = stato- 

 blast of P. punctata from Calcutta (June), x 84. 



very careful examination has revealed a few short, truncate pro- 

 cesses of the membrane joining together the valves at the extremi- 

 ties ; but these processes are minute and have not a very definite 

 form. The fact that their distal extremities are distinctly ex- 

 panded proves that they have not been broken. The majority 

 of the statoblasts taken on the surface of the lake were broken 

 round the edges and especially at the ends ; but a few were 

 intact. Of these the majority were in the same condition as 

 those still contained in the synoecium ; but in a few cases pro- 

 cesses similar to those already mentioned were found, while in 

 one or two examples the processes were larger and better devel- 

 oped, although they always varied in size and number. The 

 smallest were simply truncate and slightly expanded, but the 

 larger ones bore at their free end a circle of minute, curved, blunt, 

 relatively rather stout filaments, while the largest processes also 

 bore one or two similar filaments arranged irregularly nearer the 

 statoblasts. The processes were all flattened in the same plane as 

 the statoblasts, and bent inwardly towards its concave face. The 

 number of processes at the two ends of the statoblast was gener- 

 ally different ; but in every case in which they were well developed 

 they were arranged at either end in a graduated series, the 

 largest in the middle and the smaller processes at either side, the 

 largest occupying the extremity of the major axis of the valve. 



