79 



BRYOPSIS, Lam. 



B. plumosa, Ag. 

 Brant Point ; not common. A beautiful species. 



PHYLLITIS, Le Jolis. 



P. fascia, Kiitz. 

 Rather common on pebbles between tide marks. 



SCYTOSIPHON, Thuret. 



S. lomentarius, Ag. 

 Common. 



PUNCTARIA, Grev. 



P. latifolia, Grev., var. Zosterae, Le Jolis. 

 Common in harbor on Zostera. 



DESMARESTIA, Lamour. 



D. aculeata, Lamour. 

 Miss Anne Mitchell. 



D. viridis, Lamour. 



Siasconset, L. L. D. Both species apparently not common ; 

 handsome specimens to be had only in the spring. 



MYRIOTRICHIA, Harv. 



M. clavaeformis, Harv. 

 Brant Point, growing on Scytosiphon ; not common. 



ECTOCAHPUS, Lyngb. 



E. granulosus, Ag. 

 Siasconset, L. L. D. 



E. granulosus, Ag., var. tenuis, Farlow. 

 (Prof. W. H. Harvey.) 



E. confervoides, Le Jolis. 



E. confervoides, Le Jolis, var. siliculosus, Kjellman. 



Siasconset and Brant Point. Species and variety both abun- 

 dant on wood- work and the larger algae. 



