162 



Callithamnion byssoideum, Am. 



"Nahant" (memo. Rev. A. B. Hervey), "Nahant to New York" 



(Dr. Farlow's list). 

 Callithamnion corymbosum, Ag. 



Frequent. 

 Callithamnion Amerioanum, Sarv. 



Frequent. 

 Callithamnion Pylaissei, Mont. 



Quite common. 

 Callithamnion floccosum, Ag. 



Massachusetts Bay, northward (Dr. Farlow's list) ; Gloucester 



(Mrs. Bray). 

 Callithamnion Rothii, Lyngb. 



This is not a true Callithamnion (memo. Dr. Farlow) ; growing on 



rocks, Gloucester, etc. (Frank S. Collins, Rev. A. B. Hervey). 



Porphyra vulgaris, Ag. (Laver.) 

 Very common. 



Bangia fuscopurpurea, Lyngb. 

 Essex county waters (Mrs. Bray, Rev- A. B. Hervey). . Common. 



(?) raL,oKri»E JE . 



(incertcB sedis.} 



Chantransia Daviesii, Thuret. 



Gloucester (Mrs. J. T. Lusk), also noticed by Rev. A. B. Hervey 



and Mrs. Bray; Gay Head (Dr. Farlow). 

 Chantransia virgatula, Thuret. 



New York, northward (Dr. Farlow's list) ; Gloucester (Mrs. Bray). 



Erythrotrichia ceramieola, Aresch. 

 Cape Ann (Mrs. Bray, Rev. A. B. Hervey); Buzzard's Bay; Cape 

 Ann; Portland harbor. Me. (Dr. Farlow's list). 



Goniotriehum elegans, Zanard. 

 On Dasya. Gloucester, Mass., collected by Mrs. J. T. Lusk. 

 (Dr. Farlow, in Proc. Am. Acad., Vol. X, p. 351). 



m:el.a.nosp»ok2e. 



Fucus nodosus, L. (Rock-weed.) 

 Frequent. 



