256 NATURAL HISTORY OF 



Hab. : Lautivet Bay, Cornwall (0. W. P.). 



This rare species is distinguished by its dendroid 

 manner of growth. It is of a light brown colour. 

 The branches are cylindrical; the cells become so 

 incrusted that in the older specimens sometimes only 

 the orifice is visible. 



Genus III. Chorizopoea. {xcopt^co, to separate.) 



Zooecia more or less distant, connected by a tubular 

 network ; the orifice semicircular, with the inferior 

 margin entire ; the special pore wanting. — T. H. 



1. C. Brongniartii, Audoidn. Plate XX. fig. 9. 



Flustra Brongniartii {Aud., Savigny), Lepralia 

 tenuis [Hassall, G. J., D. L.), L. assimilis {G.J.,D.L.), 

 L. Jacotini {Gray), L. Brongniartii {Bush, Aid., Heller), 

 Mollia tuberculata {D'Orh.), M. Brongniartii {D'Orh.), 

 L. capitata {Reuss). 



Hab. : Dublin Bay {Hassall), Cornwall {G. W. P.), 

 Sidmouth {Mrs. Gatty), Lamlash {D. L.), Ilfracombe, 

 Isle of Man {T. H), Hastings {Miss Jelly), Sana Island 

 {Hyndman), Shetland {A. M. N.), Filey {A. 8. P.). 



The cells in this species are long in proportion to 

 their breadth. The surface is sometimes smooth and 

 at others furrowed. The cells are often separated by 

 expansions of the crust which are perforated by a 

 series of apertures or spaces covered with tubercles. 

 There is an avicularium at the top of each. 



The cells are connected with each other by tubes. 

 In forms where the cells are close together, they 

 appear to be surrounded by a line of punctures or 

 apertures. 



