thickly dotted over, \vhin iHirin ' tftras|X)rcs, \^'^^h 

 small, colored, raised -4- 



I>rietl, ihc plant .11, .sui»>.ui:uui, ami iuur;n, 



and of a very dark j< It iM anion^ the 



commonest of pl.i .1 i ni/, at all * 



near low-tide mark on the rocks, and in ' 

 I' IS ver)' scarce at S.mta ]kirl>ara. ^ on Kinall 



Tin ks near W»w iil at San 



Diego. N , of the . found on 



our eastern shore:>. 



Ordi RyrTOSESfIE.€., 



Genus — PKIOMTIS^ 



'Hiis is a ver mion f»»nn on the whole <>f 



the wt 1 ^ll(•n 



<lr)', l>\ . hard, smooth, ! ;l.it frond, 

 of a dark red brown color. 



Pk \, H\kv. 



lie rt l.inrc-shapc-d 



Icai'u . • f.nn.! iit«.n tVw edges of it-, 



hran ^ '''Miened frond, 



onc-icni]! ui 'v forks, or 



hr.i: from iL» two cU^^ci, \\\ ry ir- 



•Fnt ^- — A link Mw. 



