159 
Polysiphonia nigrescens, Grev. 
Frequent. 
Polysiphonia fastigiata, rev. 
Common. ; 
Rhodomela subfusea, Ag. 
Little Nahant (Dr. Farlow, in herb. P. A. S.). ‘*Common from 
Boston northward” (memo. Dr. Farlow). 
Var. gracilis. 
Swampscott (Frank S. Collins), Gloucester (Mrs. A. L. Davis, 
Mrs. Bray). 
Var. Rochei. 
Salem (in herb. P. A. S.), Gloucester (Mrs. Bray). 
SPH AX ROCOCCOIDE 2X. 
Delesseria sinuosa, Linx. 
Frequent. 
Delesseria alata, Lmz. 
Nahant, northward. Frequent. 
Delesseria angustissima, Grif. 
Gloucester (Dr. Farlow’s list, Mrs. Bray, etc.). 
Calliblepharis ciliata, Kiitz. 
Gloucester (Frank S. Collins), northward. 
Gracilaria multipartita, dg. 
East coast (Dr. Farlow’s list). 
CORALLINE &. 
Corallina officinalis, Z. 
Common. 
Melobesia membranacea, Lmz. 
Frequent (Rev. A. B. Hervey, Frank S. Collins). 
Melobesia Lejolisii, Rosanof. 
Common at Nahant (Frank S. Collins). Recently separated from 
the last. This is the common species on eel-grass. 
Melobesia farinosa, Lm. 
East coast (Dr. Farlow’s list); Marblehead (Rey. A. B. Hervey). 
Melobesia pustulata, Lm. 
Frequent (Frank S. Collins). 
Lithothamnion polymorphum, Aresch. 
Frequent (Frank S. Collins). Northern. 
Hildenbrandatia rosea, Kiitz. 
Dredged along the coast, growing on stones; ‘‘everywhere be- 
tween tide marks” (memo. Dr. Farlow). 
