XX. — THREE INDIAN PHYLACTOL^MATA, 

 By N. Annandale, D.Sc, Superintendent ^ Indian Museum. 



Plumatella bombayensis , sp. nov. 



Allied to P. tanganyikcB , Rousselet. 



Zooecia shorty stout, with thick walls, closely adherent to and even 

 embedded in solid objects, densely pigmented throughout, with 

 a strong keel and furrow on their proximal half^ almost triangu- 

 lar in cross-section in this half, but oval in the distal half ; 

 their free extremity truncated, often oblique, sometimes trum- 

 pet-shaped ; the walls of the zooecium irregularly annulated 

 towards the distal end, and often constricted a short distance 

 below the tip^ the base of some zooecia irregularly inflated. The 

 polypide with a small lophophore. which bears about thirty 



Fig. I.— Part of a colony of P. bombayensis , x \6. 



tentacles; base of the stomach rounded. Free statoblasts few, 

 elongate, often irregular in outline ; the swim-ring well developed 

 and broad ; the central capsule profusely and regularly tuber- 

 culate. Fixed statoblasts broadly oval, surrounded by a 

 chitinous ring which is often produced irregularly at several or 

 many points and is devoid of reticulate markings. 



Habitat. — On lower surface of stones in a lake and pond at 

 Igatpuri, Western Ghats, Bombay Presidency. November, 1907; 

 N. Annandale leg. Often covering a considerable area ; many of 



