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PACIFIC SCIENCE, Vol. XV, July 1961 
S or anther a ulvoidea Postels & Ruprecht f. ul- 
voidea 
Scagel, 1957; Dawson, 1958, 1959c 
Bering Sea to Government Point, Calif. 
Soranthera ulvoidea f. difformis Setchell & Gard- 
ner 
Scagel, 1957 
Bering Sea to Cape Flattery, Wash. 
Myelophycus intestinale Saunders 
Okamura, 1933; Scagel, 1957 
Atka I., Alaska, to Puget Sound, Wash. 
Ishige foliaceae Okamura 
Dawson, 1954; Setchell & Gardner, 1924 (as 
Poly opes sinicola) 
Northern Gulf of Calif. 
Phaeostrophion australe Dawson 
Dawson, 1958, 1959c 
Government Point, Calif. 
Phaeostrophion irregulare Setchell & Gardner 
Setchell & Gardner, 1925; Doty, 1947 
Coos Bay, Oreg.; Bolinas, Calif. 
fam. SCYTOSIFHONACEAE 
S cy to siphon attenuatus (Foslie) Doty 
Doty, 1947 
Coos Bay, Oreg. to central Calif. 
Scytosiphon bullosus Saunders 
Dawson, 1954; Scagel, 1957 
Cook Inlet, Alaska, to central Calif.; central 
Baja Calif.; Gulf of Calif.; Galapagos Arch. 
Scytosiphon complanatus ( Rosenvinge ) Doty 
Doty, 1947 
Cape Arago, Oreg., to Carmel, Calif. 
Scytosiphon lomentaria (Lyngbye) J. Agardh f. 
lomentaria 
Coe, 1932; Dawson, 1954; Scagel, 1957; Daw- 
son, 1959c 
Bering Sea to Islas San Benito, Baja Calif. 
Scytosiphon lomentaria f. cylindricus subf. mac- 
ulatus Setchell & Gardner 
Setchell & Gardner, 1925 
San Francisco, Calif. 
Scytosiphon complanatus (Rosenvinge) Doty 
Doty, 1947 
Cape Arago, Oreg., to Carmel, Calif. 
Petalonia debilis (C. Agardh) Derbes & Solier 
f. debilis 
Coe, 1932 (as Ilea fascia ); Dawson, 1954 
(as Ilea fascia ); Scagel, 1957; Dawson, 
I960 a\ (see also Setchell & Gardner, 1925 
for Ilea fascia f. caespitosa and Ilea fascia 
f. zosterifolia ) 
Unalaska, Alaska, to Isla Magdalena, Baja 
Calif. 
Endarachne binghamiae J. Agardh 
Dawson, 1954, 1959c 
Southern Calif, to Bahia Asuncion, Baja Calif. 
Colpomenia mollis Taylor 
Taylor, 1945 
Isla Gorgona, Colombia 
Colpomenia ramosa Taylor 
Dawson, 1954 
Isla Cedros, Baja Calif., to Puerto Parker, Costa 
Rica 
Colpomenia sinuosa (Roth) Derbes & Solier f. 
sinuosa 
Taylor, 1945; Coe, 1932; Dawson, 1954, 
1957, 1959, 1959c; Scagel, 1957; Dawson, 
Neushul, Wildman, I960 
Yakutat Bay, Alaska, to Puerto Parker, Costa 
Rica; Clipperton I.; Galapagos Arch. 
Colpomenia sinuosa f. expansa Saunders 
Setchell & Gardner, 1925 
Avalon, Santa Catalina I., Calif. 
Colpomenia sinuosa f. tuber culata (Saunders) 
Setchell & Gardner 
Dawson, 1954; Scagel, 1957; Dawson, 1959 
Unalaska, Alaska, to southern Baja Calif.; 
Gulf of Calif. 
