LIST OF THE SEA-WEEDS OR MARINE ALGJS, ETC. 293 



93. C. fracta, El. Dan. Wood's Hole, in Eel P.ond. 



94. C. Jlexuosa, Griff. Wood's Hole, Government Wharf. 



95. Chcetomorpha Piquotiana, Mont. Gay Head, Montauk. 



96. C. area, Dillw. Gay Head. 



97. C. sutoria, Berk. Gay Head. 



98. G. litorea, Harv. Gay Head. 



98. 0. tortuosa, Dillw. Wood's Hole. 



OSCILLATORIACE^I. 



100. Lyngbya majuscula, Harv. Wood's Hole, ISTaushon, Edgartown, 



called by lady collectors mermaid's hair. 



101. Calothrix confervicola, Ag. Wood's Hole. 



102. G. scopulorum, AG. Yery common everywhere on rocks. 



UlVULARIACE^E. 



103. Bivularia atra, . Though not noticed before in America, I 



found it not uncommon on shells and stones at Wood's Hole. 

 Besides the list above given there remain a number of CalUtJiam- 

 nla and Cladophorw of doubtful species, not an uncommon oc- 

 currence with collectors. It is also probable that there are 

 other species of Lyngbya and Calothrix to be found at Wood's 

 Hole. 



Localities of algm, either rare or new to American localities, not included 



in the preceding list. 



Balfsia verrucosa, AG., (B. deusta, Berk.) For the first time in 

 America found by me at Little Nahant, October, 1871. Insig- 

 nificant looking, but probably not uncommon. 



Galliblepharis ciliata, Kutz. Collected by Professor Eaton^ Mr. 

 Whitney, and myself, at Straightsmouth Island, off Cape Ann, 

 Massachusetts, September, 1871 ; not very abundant. Concep- 

 taoular fruit forming on some of the specimens. 



Sjphacelaria radicans, AG. Doubtfully located by Harvey at Bev- 

 erly. In fruit at Little Nahant, October, 1871. 



Gymnogongrus Nbrvegicus, Grev. Lynn Beach, November, 1871. 

 A single specimen covered with conceptacles. Narrower than 

 most European specimens, which was also the fact in the speci- 

 men sent to Harvey from Penobscot Bay, by Mr. J. Hooper. 



Geramium Hooperi, Harv. Straightsmouth Island. 



JPucus distichus, L. An alga, which I regard as undoubtedly this 

 species, I found growing in patches near high-water mark, at 

 Marblehead, Massachusetts, in May, 1S71. I have seen grow- 

 ing, in considerable abundance at various stations of our 

 coast, a Fucus which I supposed at first to be an unripe state 



