THE MARINE BOTANIST. 11 



resembling long warts, half-an-inch to an inch or 

 more in length. 



E. velutina. Parasitical on the thongs of Hi- 

 manthalia lorea, frequent also on Fucus serratus. 

 Annual. Summer. Annual. Spreading in thin, 

 indefinite, velvety patches, often accompanying the 

 last species. 



MYRIONEMA. 



Name signifying numberless and a thread. 

 '' Minute parasites, consisting of a mass of short, 

 erect, simple-jointed filaments, which spring from 

 a thin expansion formed of decumbent, cohering fila- 

 ments, spreading in patches on the surface of other 

 algae. Spores oblong, affixed either to the erect 

 or to the decumbent filaments." — Harv. 



