o 



12 



E, littoralis, Lyngb. Very common and variable. Among other 



My 



forms the var. bracJiiatits, Ag. {E. ramellosiis, Kiitz.) 



Common. 

 fitcicola, Fries. Common on Fiiciis. 



Leathesia difformis (L.), Aresch. Not very common; generally of 



small size, growing on Zostera. 

 Chordaria flagelliformis, Ag. Have only seen a few plants, 

 Mesogloia divaricata, Kiitz. Not uncommon. 



// 



A small form, growing on wood-work. 



R, clavata (Carm.), Crouan. With the preceding. 



Laminaria saccJiarina (L.), Lamoiir. Not rare, but not so com- 

 mon nor so luxuriant as further north. Washed ashore from 

 below low water mark. 



Ascophyllwn nodosum (L.), Le Jolis. Common. 



Fuciis vesiciclosiiSy L, Common. 



i^ fiircatits, Ag. A single plant, washed ashore, apparently hav- 

 ing grown on a mussel bed below low water mark. Not 

 exactly like the form as found on the New England coast; 

 having some resemblance to F, evanescens, Ag. 



Sargassiim vulgare. Ag. Have only seen a few plants ; appar- 

 ently not very common. 



Vaticheria Tlmretii, Woronin. 



V. litorea, Nordstedt. Have seen only sterile plants of these two 

 species, so that the determination is not certain. 



TrentepoJdia virgaUtla (Harv.), Farlow. On Zostera and algse. 



Porphyra laciniata^ Ag. 



P. leticosticta^ Thuret. Both species common and often con- 

 founded. 



Bangia fnsco-purpitrea^ Lyngb. Rather common. 

 Erythrotrichia ceramicola (Lyngb.), Aresch. 0\\ various algs- 

 CallitJiamnion cruciatum, Ag. Not uncommon. This species is 

 distributed along the Atlantic coast of Europe and North 

 America, and also in the Mediterranean, and is not a rare 

 species anywhere in those limits. The cystocarpic fruit, how- 

 ever, has been considered extremely rare, the only record of 

 its occurrence being at Brest, France, reported by Crouan. 

 At Atlantic City, however, the cystocarpic fruit seems to 

 occur quite commonly, a considerable proportion of the 



