BRITISH ZOOPHYTES. 319 



Farrella gigantea {Bush, Gosse, McA.), Avenella 

 gigantea [T. H.). 



Hab. : Tenby {Bush). 



The cells are very long, cylindrical, and incrusted 

 with earthy matter. They are developed upon a 

 creeping stolon, crowded together, or at very short 

 intervals. 



2. C. DiLATATQM, Hinchs. 



Farrella dilatata (T. H.), Avenella dilatata {T. H.), 

 Farrella fusca {Bush), Avenella fusca (Alder, A. M. N.)y 

 Vesicularia fusca /orwia simplex (Smitt). 



Hab.: Devon, Llandudno, Isle of Man {T. H.), 

 Cullercoats on other zoophytes {Aid.), Shetland 

 {A.M.N.). 



The cells are smaller than in the preceding species, 

 and are developed from protuberances on the stolon. 

 " It is of an opaque ochre-yellow colour when fresh, 

 but changes to a blackish-brown on exposure to the 

 air. The tentacles number 20, and have an opaque 

 white line down the centre." — Alder. 



3. C. PUSiLLUM, Hinchs. 



Hab. : Salcombe, Ilfracombe {T. H.). 

 A minute species found on tangle roots. 



Genus II. Anguinella, Van Beneden. {Anguina, 

 a snake.) 



Zoarium consisting of an erect common stem, giving 

 off branches at intervals, on which the cells are borne ; 

 the ectocyst incrusted by earthy matter, opaque. 

 Zooecia cylindrical. Pohjindes without a gizzard. — 

 T. H. 



1. A. PALMATA, Van Beneden. 



