450 
PACIFIC SCIENCE, Vol. XV, July 1961 
Polysiphonia indigena Hollenberg 
Hollenberg, 1958^, 1944 (as P. dichotoma ) 
Santa Cm 2 ; San Diego, Calif. 
Polysiphonia johnstonii Setchell & Gardner var. 
johnstonii 
Dawson, Neushul & Wildman, 1960a; Hob 
lenberg, 1961 
Santa Catalina L, Calif., to Topolobampo, 
Sinaloa; Gulf of Calif. 
Polysiphonia johnstonii var. concinna (Hollen- 
berg) Hollenberg 
Hollenberg, 1961 
La Jolla, Calif., to Mazatlan, Sinaloa; Gulf of 
Calif. 
Polysiphonia macounii Hollenberg 
Scagel, 1957 
Southern British Columbia 
Polysiphonia masonii Setchell & Gardner 
Hollenberg, 1961 
Isla Guadalupe, Baja Calif. 
Polysiphonia mollis Hooker & Harvey 
Dawson, 1959c; Scagel, 1957 (both as P. sny- 
derae); Hollenberg, 1961; Dawson, 1957; 
1957 b, 1959$; Dawson, Neushul & Wild- 
man, I960 
Southern British Columbia to central Mexico 
Polysiphonia nathanielii Hollenberg 
Hollenberg, 1961 
Santa Monica, Calif., to Playa Rosarita, Baja 
Calif. 
Polysiphonia pacified var. pacifica 
Doty, 1947; Dawson, 1959c; Hollenberg, 
1961 
Sitka, Alaska, to Islas Coronados, Baja Calif. 
Polysiphonia pacifica var. delicatula Hollenberg 
Hollenberg, 1961 
Monterey, Calif., to Bahia Cahuacan, Chi- 
apas; central Gulf of Calif. 
Polysiphonia pacifica var. determinata Hollen- 
berg 
Scagel, 1957 
Alaska to central Calif. 
Polysiphonia pacifica var. distans Hollenberg 
Scagel, 1957 
Southern British Columbia to Santa Cruz, 
Calif. 
Polysiphonia pacifica var. disticha Hollenberg 
Hollenberg, 1942*; Scagel, 1957; Segi, 1951 
(as P. abscissa) 
Vancouver I., British Columbia, to central 
Calif. 
Polysiphonia pacifica var. gracilis Hollenberg 
Scagel, 1957 
Southern British Columbia to central Calif. 
Poly sip honia^paniculata Montague 
Scagel, 1957; Dawson, 1959c; Hollenberg, 
1961; Dawson, Neushul & Wildman, 
1960a 
Port Holmes, British Columbia, to Punta 
Baja, Baja Calif.; northern Gulf of Calif. 
Polysiphonia savatieri Hanot 
Hollenberg, 1961; Dawson, 1943* (as P 
minutissima ) 
Santa Catalina L, Calif., to Isla Guadalupe; 
Punta Banda, Baja Calif. 
Polysiphonia senticulosa Harvey 
Scagel, 1957 
Southern British Columbia to Monterey, Calif. 
Polysiphonia simplex Hollenberg 
Hollenberg, 1961; Dawson, 1959c 
Southern Calif, to Costa Rica; Gulf of Calif.; 
Revillagigedo Arch. 
Polysiphonia sonorensis Hollenberg 
Hollenberg, 1961 
Guaymas; Empalme, Sonora 
Polysiphonia subtilissima Montagne (fide 
Tseng) 
Dawson, 1957*, 1959 b 
Costa Rica; Clipperton I. 
