126 Rhodora [JuLy 
Brachytrichia Quoyii (Ag.) Bornet & Flahault. | Only within a few 
miles of Wood’s Hole, especially on the Buzzard’s Bay side; probably 
not native ; see Bulletin Torrey Bot. Club, Vol. XVII, p. 175, 1890. 
Ceramium Capri-Cornu (Reinsch) Farlow. Bridgeport, Conn., 
Isaac Holden. 
Ceramium pedicellatum J. Ag. Newport, R. I., Mrs. W. C. Simmons. 
Derbesia vaucheriaeformis (Harv.) J. Ag. Wood's Hole, W. G.- 
Farlow; Edgartown, M. W. Jernegan. 
Dictyosiphon Chordaria Aresch. Newport, R. I., Mrs. W. C. Sim- 
mons. 
Dictyosiphon Ekmani Aresch. Nahant, F. S. Collins. 
Ectocarpus elegans Thuret. Edgartown, M. W. Jernegan. 
-Ectocarpus lutosus (Harv.) Wood’s Hole, W. G. Farlow. 
Ectocarpus ovatus Kjellman. Edgartown, Miss Colt and Miss Jer- 
negan. 
Elachista stellaris var. Chordae Aresch. Falmouth, Mass., F. S. 
Collins. 
Enteromorpha cruciata Collins. Eagle Island, Penobscot Bay, 
Maine, F. S. Collins. 
Enteromorpha torta (Mert.) Reinbold. Eagle Island, Penobscot 
Bay, Maine, F. S. Collins. 
Griffithsia tenuis Ag. Nantucket, L. L. Dame; Waquoit Bay, 
Mass., F. S. Collins. 
Gymnogongrus Griffithsiae (Turn.) Martius. Eastham, Mass., TS. 
Collins. 
Haplospora globosa Kjellman. Edgartown, Mass., J. D. King. 
Isthmoplea sphaerophora (Harv.) Kjellman. Nahant, Mass., F. S. 
Collins. A station of perhaps five square meters, the only one known 
in America. 
Kallymenia reniformis (Turn.) J. Ag. Revere Beach, Mass., F. S. 
Collins. Only two fronds. 
Litosiphon pusillus Harv. Newport, R. L, Mrs. W. C. Simmons. 
Perhaps introduced. 
Monostroma Groenlandicum, J. Ag. Common at Nahant and 
Swampscott, but not known elsewhere nearer than Greenland. 
Monostroma Vahlii J. Ag. Mystic River marshes, Mass., F. S. 
Collins ; locality now destroyed ; occurs at Greenland. 
Phaeosaccion Collinsii Farlow. Mystic River marshes and Nahant ; 
also in Greenland. 
