VOL. 5 | West-Coast Porphyras. 63 
Distribution. Pribilof : Islands, Bering Sea, U. S. S. Albatross! 
(according to Setchell’99) (57° N. lat). 
PORPHYRA LEUCOSTICTA Thur. in le Jolis, Liste des Algues 
Marines de Cherbourg, p. 100, 1863. 
P. leucosticta is distinguished from /. /aciniata by its monce- 
cious character, and from /. perforata by the thickness of the 
frond (25-50”), by the peculiar arrangement of the antheridia 
which form’ small, narrow, yellowish patches along the dark 
cerise sporocarps, and further by the number of reproductive 
bodies:—each sporocarp containing 8 carpospores and each 
antheridium containing 64 antherozoids, usually arranged in the 
form of two hollow spheres. 
flabitat. On rocks and epiphytic on algze. Lower litoral and 
sublitoral zones. March to May. 
Distribution. 'This species appears to be limited, on the Pa- 
cific Coast, to a single locality, Monterey Bay, Calif. (36° 45’ 
* Wi tot, ), 
Localities. Pacific Grove, Calif.; 47. 4d. Howe!; Mrs. J. M. 
Weeks!; W. A. Setchell No. 576r/;, Santa. Cruz, Calif., A/rs. 
J. M. Weeks! : 
PORPHYRA PERFORATA J. Ag. Till Alg. Syst. VI, p. 69, 
1882. 
The perforate condition of the fronds m this species does not 
appear to be characteristic. 
P. perforata appears to be the most common of all species of 
Porphyra of the Pacific Coast, and wherever it occurs is usually 
found in great profusion. 
P. perforata differs from P. iucucaee by its moncecious char- 
acter and by the number of reproductive bodies:—each sporocarp 
containing 32 carpospores and each antheridium containing 128 
antherozoids. 
Flabitat. On rocks, wood, and barnacles. Epiphytic on 
Zostera, Phyllospadix, Nitophyllum, Fucus, and Gigartina. 
Throughout the litoral and in the upper part of the sublitoral 
zones. January to December. _ 
