148 Natural History of the Farallones. [zozn -3 
LICcHENS— 
Determined by Mr.M. A. Howe, of the University of California. 
Theloschistes lychneus (Nyl.) Tuck. var. pygmaeus Fr. On high 
rocks. 
Theloschistes ? Similar situations. 
Buellia petraea (Flat., Koerb.) Tuck.? On rocks. 
. Placodium (not fruited). On rocks. 
ALGZ— 
Determined by Dr. C. L. Anderson (Diatomaceze omitted). 
Bryopsis plumosa Lmx. 
Codium tomentosum Slack. 
Monostroma quarternarium Desm. 
Ulva latissima L. 
Enteromorpha compressa Le Jolis. 
E. clathrata Ag. 
Cladophora scopefornis Rupr. 
C. uncialis Fl. Dan. 
C. cartilaginea Rupr. 
C. glomerata Ag. : 
Desmarestia ligulata Lyx. 
Leathesia tuberiformis Gray. 
Chordaria abietina Rupr. 
Asperococcus sinuosus Bory. 
Egregia Menziesii (Ag.) Aresch. 
Laminaria Andersonii Farlow. 
Alaria fistulosa Post. & Rupr. 
Ptergophora Californica Rupr. 
Macrocystis pyrifera Ag. 
Nereocystis Lutkenana Rupr. 
Fucus vesicculosus 1. 
f. fastigiatus Ag. 
flalidrys osmundacea Harv. 
Porphyra laciniata—=P. vulgaris Ag. 
_ PoRPHYRA Narapum Anderson, n. sp.—Fronds small, *seldom 
more than 2 inches long and ¥% inch wide, very thin, spatulate with 
short stipes, tapering quickly into a flat membrane, with slightly 
wavy entire margin; dark purple or maroon ; Cells small, structure 
fragile and rapidly decaying, 
