218 jTirst annual Report 



CORALLINACEAE 



Choreonema thuretii (Born.) Schmitz 

 Common in the middle tidal zone. 



Lithothamnion sp. 



Apparently several species of this genus form a common coating 

 on rocks throughout the tidal zone. Dr. Setchell remarks of them, 

 "No one knows the species of the crustaceous corallines." 



Amphiroa tuberculosa forma typica S. and G. 

 Amphiroa tuberculosa f. frondescens (Kuetz) S. and G. 

 The above two forms are common on the rocks of the lower tidal 

 zone. 



Corallina officinalis L. var. 

 A common coralline among rocks of the middle tidal zone. 



Corallina gracilis Lamx. 

 Frequent on roeks toward the lower tide mark. 



Jania crassa Lamx. 

 Occasional on rocks about lower tide mark. 



Jania rubens ( L. ) Lamx. 

 Occurs in middle tidal zone. 



Lithothrix aspergillum J. E. Gray 

 Frequent on rocks of the middle tidal zone. 



