~hl 
161 
DUMONTIE. 
Halosaccion ramentaceum, 4g. 
Gloucester (Mrs. H. A. Cochrane, in herb. P. A. S.), northward. 
SPY RIDIE 4. 
Spyridia filamentosa, Harv. 
Massachusetts Bay, southward (Dr. Farlow’s list). 
CHERAMIEH A. 
Ceramium rubrum, Ag. 
Very common. 
Ceramium Deslongchampsil, Ch. 
Frequent. The specimens noted as C. Hooperi, Hurv., belong to this 
species. : 
Ceramium diaphanum, foth. 
Occasionally found on the New England coast (Dr. Farlow’s list), 
Gloucester (Mrs. A. L. Davis, in herb. P. A. S.), Nahant (Frank S. 
Collins). ; 
Ceramium strictum, Harv. 
Gloucester (Mrs. Bray), etc. Not rare. 
Ceramium fastigiatum, Harv. 
Massachusetts Bay (Dr. Farlow’s list). 
Ptilota plumosa, 4Ag., var. serrata. 
Frequent from Nahant, northward. 
Ptilota elegans, Bonnem. 
Common. 
Gloiosiphonia capillaris, Car. 
Cape Ann, southward. 
Griffithsia corallina(?), Ag. 
Gloucester (Rev. A. B. Hervey), southward. ‘G. corallina does 
not occur in N. A. South of Cape Cod is G. Bornetiana, Farlow. 
Have you specimens from Essex county? I have never seen any- 
thing but fragments of a Griffithsia” (memo. Dr. W. G. Farlow). 
Collectors will confer a favor by communicating specimens of this, 
or of any species outside of the usual localities, to the writer, for 
Dr. Farlow. 
Callithamnion tetragonum, Ag. 
Niles beach, Gloucester (Mrs. Bray). More frequent south. 
Callithamnion Baileyi, Harv. 
Lynn beach (Frank S. Collins). More frequent south. 
11 
