162 
Callithamnion byssoideum, Arn. 
‘‘Nahant” (memo. Rey. A. B. Hervey), ‘‘ Nahant to New York” 
(Dr. Farlow’s list). 
Callithamnion corymbosum, Ag. 
Frequent. 
Callithamnion Americanum, Harv. 
Frequent. 
Callithamnion Pylaissi, Mont. 
Quite common. 
Callithamnion floccosum, Ag. 
Massachusetts Bay, northward (Dr. Farlow’s list); Gloucester 
(Mrs. Bray). 
Callithamnion Rothii, Zyngb. 
This is not a true Callithamnion (memo. Dr. Farlow); growing on 
rocks, Gloucester, etc. (Frank S. Collins, Rev. A. B. Hervey). 
PORPHYRE 4. 
Porphyra vulgaris, Ag. (LAVER.) 
Very common. 
Bangia fuscopurpurea, Lyngb. 
Essex county waters (Mrs. Bray, Rev. A. B. Hervey). Common. 
(2?) Bh LORIDEZ. 
(incerte 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 ceramicola, Aresch. 
Cape Ann (Mrs. Bray, Rev. A. B. Hervey); Buzzard’s Bay; Cape 
Ann; Portland harbor, Me. (Dr. Farlow’s list). 
Goniotrichum elegans, Zanard. 
On Dasya. Gloucester, Mass., collected by Mrs. J. T. Lusk. 
(Dr. Farlow, in Proc. Am. Acad., Vol. X, p. 351). 
MELANOSPORZZE. “ 
HUCACH 4%. 
Fucus nodosus, Z. (ROCK-WEED.) 
Frequent. 



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