VOL. 5 | West-Coast Porphyras. 65 
thick, and widely separates the antherozoids into an upper and a 
lower group. 
Distribution. From Washington southward to Lower Califor- 
nia (47° 30'-27° 814’ N. lat.). 
Localities. Shillshole Bay, Seattle, Washington, Miss /. E. 
Tilden (as P. leucosticta)!; San Diego, Calif., Mrs. M. S. Sny- 
der!; San Roque, Mexico, G. Eisen/. 
PORPHYRA PERFORATA F. LANCKOLATA Setchell et Hus MS. 
Membranous, 10-325 cm. long, 1-10 cm. broad; linear, with 
undulate margin; base cuneate to cordate, attached by a disc; 
steel-gray to gray or yellow-brown, becoming ,purple on drying; 
monostromatic; vegetative part of frond 75-150» thick; cells 
1 44-4 times as high as broad; surface jelly very thick, forming 
2 to % the thickness of the frond; dicecious; each sporocarp con- 
taining 32 carpospores; each antheridium containing 128 anther- 
zoids. 
Between this plant and the species there exist a number ot — 
differences, chief among which is the fact that the variety is 
dicecious, or, in case of forked fronds, sometimes subdicecious. 
Habitat. P. perforata f. lanceolata usually grows on rocks in 
the highest part of the litoral zone, January to December. 
Distribution. From San Francisco southward to Monterey 
Bay (37° 47'-36° 45’ N. lat.). 
Localities. Wand’s End, San Francisco, Calif.; WA. Setchell! 
fT, Hus!; Carmel Bay, Monterey Co., Calif., W. A. Setchell/ 
R. E. Gibbs! 
PoRPHYRA NeRkEocystis And. Zor, Vol. II, p. 221, 1891 
{name only), Zor, Vol. III, p. 149, 1892 (descr.). 
There exists little doubt in the writer’s mind but that this 
species is identical with Pyrvopia Californica of J. G. Agardh (’99). 
It may be distinguished from ?. perforata and P. perforata f. 
segregata by the red-purple color of the frond, by its greater 
size and by the arrangement of the antheridia in large, sharply- 
defined spots. The number of carpospores and antherozoids, and 
their arrangement is identical with that of the above-named 
species. 
