CATALOGUE OF PLANTS. 229 



MELOBESIA, Lamour. 

 M. pustulata, Lamour. 



Occasional on Chondrus, etc. (Collins). 



M. Lejolisii, Rosanoff. 



A few fronds on Zostera, Little Cranberry Isle (Collins). 



SQUAMARIACE^E. 



PEYSSONNELIA, Decne. 

 P. Dubyi, Crouan. 



On shells and stones, near Seal Harbor; not common (Col- 

 lins). 



PETROCELIS, J. Ag. 

 P. cruenta, J. Ag. 



Common in tide pools (Collins); Greening Island (Holden). 



RHIZOPHYLLIDACE^E. 



POLYIDES, Ag. 

 P. rotundus (Gmelin), Grev. 



Occasional in tide pools, near Seal Harbor (Collins) ; Sea 

 Wall (Holden). 



GLCEOSIPHONIACE^E. 



GLCEOSIPHONIA, Carm. 

 G. capillaris (Huds.), Carm. 



Not uncommon. Little Cranberry Isle; near Seal Harbor 

 (Collins). 



