520 MARINE ALGiE FOUND AT BKIGHTON. [May, 



Polysiphonia violacea. Frequent in 1858 and 1859 j absent in 1860; rare in 



1861. 

 Polysiphonia Brodisei 1. June, 1859. 

 Polysiphonia variegata R R, without fruit. 

 Polysiphonia nigresceus ! ! ! f. In summer small specimens, delicately pinnated, 



without fruit, and which become very black in drying, are cast ashore. 

 Polysiphonia atro-rubescens ! ! ! f. 

 Polysiphonia fastigiata ! ! ! 

 Polysiphonia byssoides ! ! ! 

 Dasya coccinea ! ! In the early spring, young ramuh may be seen sprouting 



from old fronds of the preceding year. 

 Dasya coccinea var. squarrosa. 

 Dasya punicea? PkR. Specimens with both kinds of fruit, July and August, 1859 



and 1861. 

 Laurencia obtusa ! In October and November, 1858 and 1859 ; very scarce 



since ; also in January and March. 

 Laurencia pinnatifida R R 1. December, 1861, cast ashore, parasitic on H. lorea. 

 Lomentaria ovaUs R. Growing parasitically on H. lorea in winter. No fruit 



found. 



Lomentaria kaliformis ! ! ! . 



Lomentaria kaliformis, var. j3. patens ! 



Lomentaria kaliformis, var. y. squarrosa. 



Lomentaria reflexa 1. November, 1858. 



Champia parvula ! ! ! 



Wrangelia multiflda R. Occasionally very rare.. 



Wrangelia midtifida, var. (3. pilifera, R R. 



Naccaria Wiggii ! ! ! Very fine. 



Corallina officinalis ! ! ! f- 



Jania corniculata. ") I have united these because I have scarcely ever found a spe- 



Jania rubens. 3 cimen in which the horned processes were altogether absent. 



Melobesia polymorpha ! f . 



Melobesia calcarea. Occasionally brought ashore by fishermen. 



Melobesia membranacea. "] 



Melobesia farinosa. . ^ ,, „ ., 



, , , , . , \\ On the smaller Algae. 



Melobesia verrucata. 



Melobesia pustulata. 



Delesseria sinuosa RR 1. ' Autumn, 1861. 



Delesseria alata 1. September, 1860 ; growing on Cystoclonium. 



Delesseria Hypoglossum ! ! f. More frequently cast ashore, often in very dense 



tufts. 

 Delesseria ruscifolia R. August, November, February. 

 Nitophyllum punctatum K K 1. Young plant of var. ocellatwM, growing at the 



root of Zoster a. 

 Nitophyllum Gmelini R R. July, September. 

 Nitophyllum laceratum ! ! ! 

 Nitophyllum laceratum, var. uncinatum R. 

 Sphcerococcus coronopifoJius R. In the autumn and winter of 1859-60, abundant 



after stormy winter ; specimens large, and dried dark. I obtained about 



seventy specimens. 

 Gracilaria compressa RR 1. 



