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. 



