RED ALGM. 177 



width when full grown, and much divided. From 

 a minute point of attachment it widens rapidly upward 

 in a wedged-shaped manner, quite like a palmate, or 

 typical form, of "Dulse," and in general, it may be 

 said to have the habit of the smaller species of that 

 genus, found in the same neighborhood, viz. : Rhody- 

 menia corallina. The full grown frond is divided 

 almost to the base into three or four lobes, and these 

 again at top, having widened much, are themselves 

 divided half way down, the secondary lobes being 

 nicely rounded and scalloped at top. It is full red, 

 thickish and nerveless. It is not very uncommon in 

 northern California, but is rare in Santa Barbara, and 

 has not yet been found at San Diego. In the former 

 place it is thrown up from deep water in May, and 

 probably at other times. 



NiTOPHYLLUM AnDERSONII, Ag. 



Though by no means the largest, this is one of the 

 most interesting and certainly the best marked species 

 of the group. It has a narrow frond throughout, not 

 over one-third of an inch wide, often less than that. 

 It throws out branches profusely along each edge, 

 or quite loses itself in branchings and forkings, so as 

 to make often, a very rambling and uncertain outline. 

 But the figure, in Plate XI., will give a much better 



