1863.] MARINE ALG^ FOUND AT BRIGHTON. 521 



Gracilaria compressa R R 1. 



Gracilaria confer voides ! ! ! +. 



Gelidium corneum. 



Gelidium conaeum, rai'. latifolium 1. Young specimen. 



Gelidium eorueum, Tar. crinale f. 



Gelidium corneum, var. clavatum. Growing on woodwork submerged each tide. 



Western aspect. 

 Poljides rotundus ! ! ! f 



Scinaia farcellata ! ! ! f. Rocks below Crescent. 

 Helminthoj'a divaricata R R 1. June, 1859. 



Helminthocladia purpurea R R 1. A remarkably fine specimen, in August, 1859. 

 Wormskioldia sanguinea R. After storms, generally much lacerated. 

 Plocamium coccineum ! ! ! •!". Finest plants washed ashore. 

 Plocamium coccineum, var. uncinatum R. 

 Rhodymenia palmata ! ! ! f . 

 Rhodymenia palmata, var. marginifera. Also broad palmated forms, but none 



narrow varieties. 

 Rhodymenia palmata, var. simplex. 



RhodophyUis bifida ! ! ! July to December, normal form !. 

 RhodophyUis bifida, var. cihata. 

 Cordylocladia erecta R f. 

 Spyridia filamentosa R 1. June, 1861. 

 Phyllophora rubens ! ! Very common in 1860. 

 Phyllophora rubens, var. or new species, 1858. 



Phyllophora membraiiifolia ! ! A very variable plant, also var. steUata. 

 Gymnogongrus GriiBthsia R f. Black Rock ; July to autumn. 

 Gymnogongrus norvegicus ! ! ! f. Black Rock ; September to March. 

 Ahnfeldtia plicata ! f. Black Rock. 

 Cystoclonium purpurascens ! ! 



Gigartiua aeicularis 1. On S. lorea; December, 1861. 

 Chondrus crispus ! ! ! ! 

 Halymenia ligulata ! 



Ealymenia ligulata, var. o. dicliotoma R. 

 Halymenia ligulata, var. yS. ramentacea ! 

 Chylocladia clavellosa ! ! ! A slender variety also. 

 Chylocladia articulata R R. Two specimens (young) only, one growing at Black 



Rock, the other on S. lorea, June, 1860. 

 Furcellaria fastigiata ! 



Schizymenia edulis ! f. More frequently cast ashore. 

 Ceramium rubrum ! ! ! ! • 



Ceramium rubrum, var. botryocarpum. 

 Ceramium rubrum decurrens. 

 Ceramium Deslongchampsii R f. 



Ceramium diaphanum. Abimdant, and of large size, in autumn of 1861. 

 Ceramium nodosum ! ! 

 Ceramium fastigiatum R. August, 1861. 

 Ceramium echionotum. Occasionally cast ashore. 



Ceramium ciliatum R R 1. January, 1861 ; a young specimen, growing on Fucus. 

 Dudresnaia coccinea. Frequently abundant, and in fine condition ; at other 

 times rare. 

 N.S. VOL. VI. 3 X 



