XX 



PLATES OF FEUCTiriCATION, 



F. — Rhodymenia bifida. 



Fig. 1, Portion of frond with imbedded 

 tubercles (coccidia), containing 

 spores. 



Nitophyllum punctatum. 



rig. 2. Portion of frond exMbiting one 

 of the sori, consisting of an 

 assemblage of tetraspores. 



\ 



G. — Callithamnion Borreri. 

 Fig. 1. Branch with capsular fruit. 



2. Branchlet with a bilobed favella. j 



y 



H. — Phyllophora rubeus. 



Fig. 1. "Wart, vnth one leaf removed to 

 show the nemathecia. 

 2. Moniliform filaments, composing \ 



the nemathecium. 



i 



\ 



