OLIVE COLORED ALGJE. 123 



Sub-order.— SCYTOSIPHOXE&. 

 Genus.— PHYLLITIS* (Kutz.), Le Jolis. 



Phyllitis fascia, f Kutz. 



This is quite common along our rocky shores, at 

 all seasons, in tide pools near low-water mark. It 

 usually grows in tufts : a cylindrical stem gradually 

 expands into a long, flat, narrow frond, from one- 

 fourth to one inch wide, and from three to twelve 

 inches long. It is usually blunt at top, and, as just 

 said, attenuated below. My specimens are narrow, 

 with parallel sides, one-third of an inch wide and 

 twelve inches long. The color is a brownish olive, 

 and the substance membraneous, but not very thick. 

 My Californian correspondents report it very com- 

 mon along the whole extent of that coast. 



Genus.— SCYTOS/P//OiV,t Lyngb. 



SCYTOSIPHON LOMENTARIUS, AG. 



This species grows in much the same situations 

 as the last, oftentimes in company with it, in the tide 

 pools. It is common on our eastern coast, and is 



• Phyllitis = Leaf, like Hart's tongue. 

 t Fascia = A band 



X Scytosiphon = A leather tube. 



