32 



0. tenuis, Ag. ; West Point. 

 0. decorticans, Grev. ; on cisterns. 

 0. museorurn. Ag. ; West Point. 

 0. nigra, Vaucher ; West Point. 

 0. cor. . Ag. ; West Point, 

 o £>p. ! or new. 



Order V.— XOSTOCHACE.E. 



Mostly fresh water Algs. Bead-like filaments surrounded in 

 gelatine. Contains twc genera. 



Gents I. — Nostoc. 



~S.fo.ic.ee: :. Ag. ; £a:u r earth. 



N. spharicum, Vaucher ; running streams — Greenwood. 



N. cristanum, Bailev ; West Point 



II. Sphjerozyga. fr**'* 

 S.jlos-aqu<2, Bory St. Vincent; West Point. 



' Order VI.— PALMELLACE.E. 

 Tubular, confervoid filaments containing the cells. 



Gents I.— PALMELLA. 



P. hyalina, Lyngb. ; common. 



Miscellaneous Chlorosperms. 



Acetubularia Creuulata, Lam.; Florida. 

 Anadyomene f.a': :elata. Ag. : Kev West. 



A. St'ellata : Key West. 

 Bulbochaete Setegera. Ag. : West Point. 

 Batrachospermeae Americanum. Schweinitz. 



B. Moniliforme, As. ; West Point, Astoria, Ccc. 

 3 Sp. ? or new. 



Botridium Granulatum ; ponds. 



Colevchaete Scutata. Brebisson : V> est Point. 



Drapernaldia Plumosa. Ag. : West Point. 



D. Glomerata. Ag. : West Point. 



D. Tenuis, Ag. ; West Point. 



Echinella. Sp. ? or new. Common. 



Frageilaria Pectinalis, Lyng. 



Hv . Ut:::ulatum, Rothwell ; Philadelphia. 



Haemmatococcus Grevillei, Ag. ; \N est Point. 



Lemania Americana, Harvey. 



L. Fhmatiiis. Ag. : West Point. 



L. Tortulosa, Ag. ; West Point. 



Merismcoeiia Punctata. Meven : West Point. 



Mougestia Genunexa. Ag. ; Newport. (Marine.) 



Pelion. Sp. ? or new. 



