522 MARINE ALG^ FOUND AT BRIGHTON. \_May, 



Ptilota plumosa E- R 1. Young plant, growing on Salurus equisetifolius ; 

 March, 1861. 



Ptilota elegans E E, 1. August, 1861. 



Halurus equisetifolius E. December to March and May ; Never found in fruit. 



GrrifRthsia barbata E. End of June to October ; generally rare. 



GrifBthsia devoniensis R E. July and August, 1861. 



Griffithsia coraUina ! ! f. More frequently cast ashore ; often in dense masses. 



Griffithsia setacea ! ! ! f. Black Eock ; very fine. 



Corynospora pedicellata ! ! 



Corynospora pedicellata, var. ? One form of the plant difiers so much in appear- 

 ance from the normal form, that it seems to be entitled to be called a variety. 



Seirospora Griffithsiana E. Very fine ; I possess a specimen which measures five 

 inches in length. 



Callithamnion plumula E. 



Callithamnion cruciatum E E 1. September, 1858. 



Callithamnion Turneri. 



Callithamnion Hookeri E 1. October, 1858. 



Calhthamnion pluma E. 



Callithamnion brachiatum. February, 1863 ; on Desmarestia aculeata. 



Calhthamnion roseura. Very fine on oyster-beds at Shoreham Harbour, 



Callithamnion roseum, var. 



Callithamnion Borreri E E. Parasitical on S. lorea ; January, 1860. 



Callithamnion byssoideum. On Algae. 



Callithamnion polyspermum var. Grevillei ! ! ! f. Growing on west, north, and 

 south (never on east) sides of woodwork, submerged every tide. The normal 

 form is rate. 



Callithamnion thuyoideum E E 1. In 1863. 



Callithamnion corymbosura. Occasionally found. 



Callithamnion mesocarpum E E. On smaller Algae ; June, 1861. 



Callithamnion sparsum E E. 



One of the most beautiful specimens I have ever 



Callithamnion Daviesii, and \ ^^^^ ^^g growing on a knot of tow, the fibres of 



' which were studded with the beautiful httle tufts. 



Chloeosperme^. 

 Codium bursa E f . August to March inclusive ; generally washed ashore after 



storms. 

 Vaucheria f . Shoreham Harbour ; not in fruit. 

 iBryopsis plumosa f. Eocks below Crescent. 

 Porphyra laciniata ! ! ! f . 

 Porphyra vulgaris ! f . 



Bangia fusco-pui'purea f. On a groyne at Black Rock. 

 Enteromorpha intestinalis ! ! f- 

 Euteromorpha compressa ! ! ! f- 

 Enteromorpha erecta 1 ! ! f. 

 Enteromorpha erecta, var. clathrata ! f . 



Enteromorpha percursa f. Salt-marshes and ditches ; Lancing. 

 Cladophora Hutchinsise. 

 Cladophora diffusa. 

 Cladophora rupestris ! t- 

 Cladophora leete-virens ! ! f. 



