Benthic Algae-— Dawson 
421 
Amphiroa franciscana var. robust a Dawson 
Dawson, 1954 
Bahia Agua Verde, Gulf of Calif.; Acapulco, 
Guerrero 
Amphiroa galapagensis Taylor 
Taylor, 1945 
Galapagos Arch. 
Amphiroa magdalenensis Dawson 
Dawson, 1954, 1959 
Isla Guadalupe; Isla Magdalena, Baja Calif.; 
southern Gulf of Calif. 
Amphiroa mexicana Taylor 
Dawson, 1954 
Morro de Petatlan, Guerrero; Salina Cruz, 
Oaxaca 
Amphiroa minutissima Taylor 
Dawson, 1957& 
Golfo Duke, Costa Rica 
Amphiroa peruana Areschoug 
Taylor, 1945 
Galapagos Arch. 
Amphiroa subcylindrica Dawson 
Dawson, 1954, 1959 
Gulf of Calif.; Barra de Navidad, Jalisco 
Amphiroa taylorii Dawson 
Dawson, 1954, 1954c, 1957 b, 1959 
Revillagigedo Arch.; southern Gulf of Calif.; 
Isla Maria Magdalena, Nayarit; Costa Rica 
Amphiroa tuberculosa (Postels & Ruprecht) 
Endlicher 
Yendo, 1902 
Port Renfrew, British Columbia 
Amphiroa vanbosseae Lemoine 
Taylor, 1945 
Galapagos Arch. 
Amphiroa zonata Yendo 
Taylor, 1945 (as A. peninsularis) ; Dawson, 
1954, 1959c; Dawson, Neushul & Wild- 
man, I960 
Santa Catalina I., Calif., to Isla Magdalena, 
Baja Calif.; Gulf of Calif.; Isla Maria 
Madre, Nayarit; Esmeraldas, Ecuador 
Arthrocardia tuberculosa Weber van Bosse 
Lemoine, 1929 (as equal to the Amphiroa 
orbigniana of Farlow, 1902) 
Galapagos Arch. 
Calliarthron chielosporioides Manza 
Smith, 1944; Dawson, 1954; Dawson, Neu- 
shul & Wildman, I960 
Bolinas, Calif., to Isla Cedros, Baja Calif. 
Calliarthron regenerans Manza 
Scagel, 1957; Dawson, Neushul & Wildman, 
1960, I960* 
Vancouver I., British Columbia, to Isla San 
Geronimo, Baja Calif. 
Calliarthron setchelliae Manza 
Smith, 1944 
Moss Beach; Monterey, Calif. 
Calliarthron schmittii Manza 
Dawson, 1949; Scagel, 1957 
San Juan I., Wash.; Tanner Bank; San Diego, 
Calif. 
fam. DERMOCORYNIDACEAE 
Dermocorynus occidentalis Hollenberg 
Dawson, 1954 
Los Angeles Co., Calif., to Punta Banda, Baja 
Calif. 
fam. CRYPTONEMIACEAE 
Grateloupia abreviata Kylin 
Hollenberg, 1948; Dawson, 1954, 1959c 
Southern Calif. 
Grateloupia avalonae Dawson 
Dawson, 1949 
Catalina I., Calif. 
