18 



OSCILLARIACBAE. 



OSCILLARIA Kiitz. 

 O. Froelichii Kiitz. 



Frequent. 

 O. aerugfinea-caerulea Kiitz. 



Frequent. 

 O. limosa Kiitz. 



Q2iee7is : Jamaica Bay, AVhitestone, Pike. 



MJCROCOLEUS Desmaz. 



M. chthonoplastes (Fl. Dan.) Thuret. 



Z/V/^i- .• Fort Hamilton, Pike. 6'?//^/i ; Greenport, Pike. Queens: 

 Cold Spring Harbor, Johnson. 



SPIRULINA Tui-pin. 

 S. tenuissima Ktitz. 



Kings : Fort Hamilton, Gravesend, Pike. Queens : Cold Spring 

 Harbor, Johnson. 

 S. Thuretii Con. 



Queens : Cold Spring Harbor, Johnson. 



SPHAEROZYGA Ag. 

 S. polyspetma Kdtz. 



Queens : Cold Spring Harbor, Johnson. 



LYNGBYA Ag. 



L. aestuarii (Jiirg ) Laebm, 

 Kings: Bay Ridge, Pike. Queens: Cold Spring Harbor, 



Johnson. 

 L. luteofusca (Ag. ) J. Ag. 



Not infrequent throughout coast. 

 L. majuscula (Dill.) Harv. 



Kin^s : Canarsie, College Point, Pike. 

 lu. nigrescens Harv. 



Not infrequent throughout coast. 

 L. tenerrima Thuret. 



Kings : College Point, Pike. 

 KODULARIA Martens. 



Ki7igs : Bay Ridge, Hellgate, Pike. 



RIVULARIAOBAB. 



CALOTHRIX Ag. 



C. cotivervicola (Roth) Ag. 



Not infrequent. 

 C. Crustacea (Sch.) B. & Thuret. 



Kings : Bay Ridge, Pike. 



