330 NATURAL HISTORY OP 



Hab. : Northumberland {Hancock). 



This is a small species with a transparent greenish 

 polypidom of about half an inch in length. The 

 branches are " composed of a series of large conical 

 cells tapering towards the upper portion of the cell, 

 almost colourless, and freckled with minute opaque 

 white spots/^ The tentacles number 60, and are white, 

 with a distinct festooned calyx. 



The statoblasts are described as perfectly black, 

 broad, and oval. 



3. P. FRUTicosA, Allman. 

 Hab. : In lakes and ponds. 



This species resembles the free variety of P. repens 

 or F. sultana in general appearance. It is bushy, and 

 irregularly branched. The cells and branches are 

 cylindrical, and the statoblasts are elongately oval, 

 with a broad cellular annulus. 



4. P. coRALLOiDEs, Allman. 

 Hab. :" London Docks {G.J. A.). 



A transition species between A. fungosa and the 

 present genus. It forms dense tufts of ^ inch to an 

 inch in height, dichotomously branched. The colour 

 is yellowish-brown. The number of tentacles is about 

 60. The statoblasts are broad. 



5. P. EMARGiNATA, Allman. 

 Hab. : Streams and rivulets. 



In this species there is a prominent furrow down 

 one side of each cell, commencing with a triangular 

 space near the orifice. The zoophyte is found on the 

 under side of stones. It covers the ectocyst with 

 minute particles of sand, which give it a granular 

 appearance. The tentacles are 40 in number. The 

 statoblasts are elongately oval. 



