172 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 

 RHODOSPERME^. 



Odonthalia dentata.—Ahimdvuit. This species is not found in 

 the South of England. 



Polysiphonia Brodlcei. — Frequent. 



P. nigrescens. — Common. 



P. parasitica. — Not common, but may have escaped notice. 



P. elongata. — Not common. 



P. fastigiata. — Common on Fucus nodosus. 



P. hyssoides. — Not common. I collected a niunber of species 

 of this genus, but was not able to name them. 



Dasya coccinea. — Frequent. 



Bonnemaisonia asparagoides. — Rare; more frequent at 

 Drumadoon. 



Laurentia ca^spitosa. — Frequent, but small in size. 



Lomentaria kaliforinis. — Common, but not in good condition* 



Corallina officinalis. — Abundant. 



C. squamata. — Less common than preceding. 

 Delesseria sinuosa. — Abundant. 



D. alata. — Common. 



D. ruscifolia. — One small specimen found. 

 Nitophylluin punctatum. — Frequent. 



N. Bonnemaisonii. — Frequent, and very variable. 

 N. laceratum. — Abundant. 



Maugeria sanguinea. — Frequent, but not in good condition ? 

 perhaps too late in the season to find it fresh. 



Rhodynienia pahnata. — Common. 



Rliodophyllis bifida* — Not common; but small in size, and 

 may be overlooked. 



Plocamiuvi coccineii'in. — Common. 



Cystoclonixiin purpu rascens. — Frequent. 



Callophyllis laciniata. — Common, and in good condition. 



Gigartina inamillosa. — Frequent. 



Chylocladia articulata. — Frequent, but very small. 



C. clavellosa. — Not common. 



Furcellaria fastigiata. — Frequent. 



Schizynienia edulis. — Not common. 



Gloiosiphonia capillaris. — Not common, but apt to escape 

 notice. 



Dumontia fil if ormis.— Common, and very variable. 



Ceramium ruhruin. — Common, and variable. 



C. decurr ens.— This may be a variety of the preceding species* 



Ptilota pluniosa. — Very common. 



P. clegans. — Not so common. 



Griffitlisia setocea.— Frequent. 



CaUitliamnion tripi una turn.— Hare; from its small size it 

 may escape notice 



This is an extensive genus, but I have not hitherto given it 

 much attention. 



