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PACIFIC SCIENCE, VoL XV, July 1961 
Sargassum galapagense Grunow 
Taylor, 1945 
Galapagos Arch. 
Sargassum herporhizum Setchell & Gardner 
Dawson, 1954 
Isla George; Isla San Pedro Martir, Gulf of 
Calif. 
Sargassum horridum Setchell & Gardner 
Dawson, 1954, 1959 
Southern Gulf of Calif. 
Sargassum howellii Setchell & Gardner 
Dawson, 1954 
Revillagigedo Arch. 
Sargassum johnstonii Setchell & Gardner f. 
johnstonii 
Dawson, 1954 
Punta Penasco to Bahia Agua Verde, Gulf of 
Calif. 
Sargassum johnstonii f. gracile Setchell & Gard- 
ner 
Dawson, 1954 
Punta Penasco to Guaymas, Gulf of Calif. 
Sargassum lapazeanum Setchell & Gardner 
Dawson, 1954 
Guaymas to La Paz, Gulf of Calif. 
Sargassum liebmannii J. Agardh var. liebmannii 
Dawson, 1954, 1951b 
San Jose del Cabo, Baja Calif., to Bahia 
Honda, Panama 
Sargassum liebmannii var. nicoyana Grunow 
Dawson, 1951b 
Golfo de Nicoya, Costa Rica 
Sargassum macdougalii Dawson 
Dawson, 1954, 1959 
Central and northern Gulf of Calif. 
Sargassum muticum (Yendo) Fensholt 
Scagel, 1957 
Nanaimo, British Columbia, to Coos Bay, 
Oreg. 
Sargassum pacificum Bory f. pacificum 
Taylor, 1945; Dawson, 1957 
Galapagos Arch. 
Sargassum pacificum f. congestum Setchell 
Taylor, 1945 
Galapagos Arch. 
Sargassum pacificum f . rigidiusculum ( Grunow) 
Setchell 
Taylor, 1945 
Galapagos Arch. 
Sargassum pacificum f. me gap hy Hum Taylor 
Taylor, 1945 
Galapagos Arch. 
Sargassum palmeri Grunow 
Dawson, 1954 
Santa Cruz ?; Santa Catalina I., Calif., to Islas 
San Benito, Baja Calif. 
Sargassum setifolium ( Grunow ) Setchell 
Taylor, 1945; Dawson, 1957 
Galapagos Arch. 
Sargassum sinicola Setchell & Gardner 
Dawson, 1954, 1959 
Punta Penasco to La Paz, Gulf of Calif.; Isla 
Guadalupe, Baja Calif. 
Sargassum skottsbergii Sjoestedt, prox. 
Taylor, 1945 
Salinas, Ecuador 
Sargassum sonorense Dawson 
Dawson, 1960a 
Northern Gulf of Calif. 
Sargassum templetonii Setchell 
Taylor, 1945; Dawson, Neushul & Wildman, 
I960 a 
Isla Magdalena, Baja Calif.; Galapagos Arch. 
Sargassum vizcainense Dawson 
Dawson, 1954; Dawson, Neushul & Wild- 
man, 1960a 
Bahia Vizcaino and Isla Cedros to Punta 
Pequena, Baja Calif. 
