402 Prof. Bailey on the Alge@ of the United States. 
Porphyra vulgaris, Ag. Narragansett Pier, S. T. Olney. 
Seaconnet, R. I. Massachusetts, G. B. Emerson and Rey. J. L. 
Russell ! : 
Ulva latissima, Linn. Rhode Island. Common, Old Point 
Comfort, Va. Sullivan’s Island, 8. Ca. 
Ulva lactuca, Linn. Rhode Island. 
Ulva bullosa, Roth. Salem, N. Ca., Schweinitz. Newburgh, 
N.Y. 
Merismopedia punctata, Meyen. Round Pond, near West 
Point. A larger variety occurs in freshwater pools, near the Pa- 
vilion, at Rockaway, Long Island, 
Bangia fusco-purpurea, Lyngb. " Narragansett Pier, George 
Thurber! Newport and Seaconnet, R. I 
Enteromorpha intestinalis, Link. Hudson we: from New- 
burgh to New York city. Narragansett Common. 
Enteromorpha compressa, Link. Common with the above. 
Einteromorpha erecta, Hook. Newport and Seaconnet, R. I. 
Tetraspora gelatinosa, Desvy. Maine to Ouisconsin. Very 
common. 
Tetraspora gelatinosa, var? Sakonia, Bailey. Perhaps a 
variety of the above, but remarkable for the numerous perforations 
in s iPene West Point, N. Y. Chautauque Co., N. Y., M8 
Peti 
al Palmela hyalina, Lyngb. Rhode Island to Ouisconsin. 
An wt tae flos-aque, Bory. Round Pond, West Point. Has- 
sall thinks that Bory’ s account of the ambulatory faculty, and 
vermiform motions of this curious organism, is “fanciful and 
overstrained.” I have, however, eens watched its active 
and extraordinary vermiform motio 
Protococcus nivalis, Ag. Red snow plant, forming red stains 
on gneiss rocks. Kosciusko’s garden, in early spring. 
Hammatococeus Greville: ? Ag. Common on summit of 
Crow’s Nest, West Point, N. Y. 
Nostoc foliaceum ? Ag. Wet ohenss near mill dams, &c- 
West Point, N. Y., and linea 
rivulets, near West Point. I have found it ae late in autumn. 
Since. the publication of the first part of this list, 1 have refer- 
red some of our plants about whose true names I was in doubt, 
to the practised eye of the eminent British Algologist, W. H. Har- 
vey, _— I have to thank him for much useful information with 
0 them, which although not sent with a view to pu 
tion, we I think be presented now without impropriety. 
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