346 D. C. Eaton — Algm from Eastport, Maine. 



24. Delesseria alata, Lamouroux. 



Growing on Ptilota serrata at Dog Island, below low-water-mark, 

 J/r. Prudden. Grand Menan, Dr. Palmer. Some of the specimens 

 have the margins of the segments entire as described by Dr. Harvey, 

 and as seen in fine Irish specimens sent me by Dr. Dickie, but others 

 are much denticulated and laciniated, so as to suggest D. denticulata 

 of Montague ; but as transitions occur, and even the common Cape 

 Ann plant has the margins by no means entire, I prefer to refer all 

 the Eastport specimens to D. alata. 



25. Calliblepharis ciliata, Kiitzing. 



Campobello Island, 3Ir. Prudden. Grand Menan, Dr. Palmer. 



26. Polyides rotundus, GrevUie. 

 Tide-pools, common. 



27. Hildenbrandtia, ? 



Forming a very smooth, thickish, dark red crust on rocks, and 

 sometimes on shells, always covered at low tide, and in rock-pools on 

 Campobello Island. The only specimen brought home is not in fruit, 

 and therefore I cannot identify it with certainty. The cells are 

 about twice the diameter of those of the common Hildenhrandtia of 

 southern New England, which I take to be H. Grouatii, J. G. 

 Agardh. 



28. Euthora cristata, J- G- Agardh. 



Rock-pools, on Campobello Island. Grand Menan, Dr. Palmer, 

 with conceptacular fruit. 



29. Rhodymenia palmata, Greviiie. 



Very abumlant, mostly between tides. A condition with numerous 

 frondlets developed from the surface of the main frond is not un- 

 common. 



30. Ahnfeltia plicata, Fries. 

 Grand ]Menan, Dr. Palmer. 



31. Cystoclonium purpurascens, Kiitzing. 



Tide-pools, on Cam])obello Island. Grand Menan, Dr. Palmer. 



32. G-igartina mamillosa, J. G. Agardh. 



Very abundant on rocks, mostly just above low-water-mark, also in 

 tide-pools. 



