MARINE ALG^ OF THE UNITED STATES. 715 



Calothrix pilosa, Harv. 



Key West. 

 Calothrix dura, Harv. 



Key West. 

 Microcoleus corymbosus, Harv. 



Key West. 



Suborder NOSTOCHINE.E. 



Sph^erozyga Carmichaelii, Harv. 



Noank, Conn. ; Wood's Hole, Mass. ; Europe. 



Suborder RIVULARIE^E. 



ElVULARIA ATRA, Eotll. 



New England ; Europe. 

 Eivularia plicata, Carni. 



Cobasset Narrows, Mass.; Europe. 



Order PALMELLE^. 



Cryptocoocus roseus, Kiitz. 

 New England; Europe. 



addenda.* 



LlTHOTHAMNION FASCICULATUM, Aresch. 



Eobbiustown, Me. ; Europe. 



AMPHIROA NODULOSA, Kiitz. 



San Diego, Cal. ; Venezuela. 



Griffithsia opuntioides, J. Ag.l 

 Santa Cruz, Cal. 



Petrocelis cruenta, Ag. i 



Nabant, Mass. ; Eastport, Me. ; Europe. 

 Fucus platycarpus, Tburet. 



Eastport, Me. ; Europe. 



Laminaria Andersonii, Eaton, mscr. 

 Santa Cruz, Cal. 



Mesogloia Andersonii, Farlow, mscr. 

 Santa Cruz, Cal. 



Ealfsia clavata, Crouau. 

 Eastport, Me. ; Europe. 



Spirulina tenuissima, Kiitz. 

 Eastport, Me. ; Europe. 



ElVULARIA NITIDA, Ag.l 



Wood's Hole, Mass. 

 Protococous crepidinum:, Thuret. 

 Eastport, Me. 



