Plate XW'JII. 



123. — P(jl}'si[)lioriia fibrillosa, Grcz'. 



125. — Polj-siphonia simiilans, Han\ 



127. — Polysiphonia fastigiata, Gnv. 



124. — Pol}'siphoiiia variegata, Ag. 



126. — Pol}siplionia furccllata, Harv. 



— Pol)'siplioiiia parasitica, Grev. 



