43 



Camoanularia dumosa, Fleming's Brit. An., p. 548. John- 

 ston's Brit. Zooph., p. 157, pi. 23, figs. 2, 5. 



Hab. On stones, shells, and corallines ; common. 



The species varies so much in its general appearance, that 

 specimens are frequently totally unlike each other. Some- 

 times it stands erect to the height of four inches and is very 

 much branched ; at others it creeps along the surface of a 

 stone or shell and nothing but the cells are visible; and 

 frequently it creeps up the stems of the Sertulariae, the cells 

 standing in relief irregularly round them. When erect and 

 branched, it is somewhat bushy, and the trunk and branches 

 are square. The cells, which are nearly sessile, stand in 

 relief from all parts of the polypidom, as small linear tubes. 

 But whatever shape it may assume, it is at all times readily 

 distinguished by its cells ; they are of a deep brown colour, 

 deeply tubular and tapering towards the base; they are much 

 stouter than any other of the genus, and the apertures are 

 even, and unarmed, and the rim patulous and everted, like 

 the aperture of a bugle. 



CYMODOCE A. Lamouroux, 

 Generic Character: ''Plant-like, cells cylindrical, varying 



in length, filiform, alternate or opposite ; stem fistular, 



marked with rings below, plain above, and without interior 



division." Lamouroux. 

 CYMODOCEA SIMPLEX. " Stems simple, more or less 



waved, twig-like ; cells alternate, long, and filiform ; yellow 



fawn colour." 



Cymodocea simplex, Lamouroux's Cor. Flex., p. 216, 

 no. 357. Johnston's Brit. Zooph., p. 153. 



I have obtained several specimens of this species, or some- 

 thing very nearly resembling JLamouroux's magnified figure, 

 at pi. vii., figs. 2, B, though unlike his figure of the natural 

 size ; and I am satisfied that all were nothing more than 

 injured specimens of Laomedea Gelatinosa. 



As this genus of Lamouroux contains only three species, 

 each of which has a very doubtful existence, it may be en- 

 tirely discarded. 



ORDER II. 



ASTEROID A 



The second order of British Zoophytes embraces but a 

 few species, but offers considerable variations in character 

 and appearance from any of the others. In the order last 

 described, as also in the Helianthoid and Ascidiari zoophytes, 

 the polypidom or hard part is external, while in this it is 



