Prof. Bailey on the Alg@ of the United States. 403 
Laminaria ? trilaminata, Harvey, ms. A curious three wing- 
ed species, of which a fragment was found by Mr. Olne ey at Nar- 
ragansett Pier, and of which I also found imperfect cn ! at 
Stonington. Harvey remarks “it is new to me, and must be 
either a Laminaria or an Alaria, probably the former, bint” util 
perfect specimens are obtained we cannot decide.’ 
cen ge Jeniculaceus, Grev. Common at Newport and 
Seaconnet, 
Gracilaria, n.sp. This species of Gracilaria grows in vast 
quantities in Narragansett Bay, near Providence, R. I. Harvey 
remarks concerning it, “it is new to me, and as far as I can make 
out undescribed. Agardh’s Spherococcus subulatus from Canada, 
seems to come nearest to he It may be the same.’ 
Chrysimenia, n. sp. Abundant near Providence, R. I. Har- 
vey states, that “it is sllied to ©. clavellosa, but still more nearly 
to C. secunda, Hook. and Harv., (a native of New Zealand,) and 
it may be identical with it.” 
Spyridia filamentosa, Harv. A slender variety of this, is the 
plant which I mistook for an undescribed species of Griffithsia. 
It oceurs both at Providence and Newport. 
Sonia a abana corymbosum, Ag. Harvey thinks that the small 
Callithamnion common near Providence, is of this species, but he 
has not seen this fruit, which however I have studied myself on 
the recent plant, and ‘| find it to agree with the description of C. 
corymb osum. 
Polysiphonia Olneyi, Harv. us. This beautiful plant grows in 
Breat et near Providence, R. I., where it was first found 
y 8. T. Olney, Esq. of that city. I had confounded it with P. 
Ea to which Harvey remarks it is very near but not exact- 
y the same. 
Polysiphonia variegata, Ag. fide Harv. Common near Prov- 
idence, R. I. 
Rhodomela subfusca, Ag. Common at Newport and Seacon- 
net Point, R. I. 
Tet etraspora hag Bailey. Harvey says, “ this is certainly 
anew species. I have never seen any thing like it.” It isc 
mon Sireiainond the state of New York, and characterized by 
perforations of various sizes in all parts of the frond, so that 
dried on paper it has a reticulated appearance. 
To be continued.) 
