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PACIFIC SCIENCE, Vol. XV, July 1961 
Sarcodiotheca tenuis Taylor 
Taylor, 1945; Dawson, 1961 (as probably 
equal to S. divaricata ) 
Galapagos Arch. 
fam. RHABDONIACEAE 
Catenella repens ( Lightfoot ) Batters 
Taylor, 1945 
Galapagos Arch.; Esmeraldas, Ecuador 
Catenella impudica (Montagne) J. Agardh 
Taylor, 1945 
Bahia Buenaventura, Colombia 
fam. RHODOPHYLLIDACEAE 
Rhodophyllis dichotoma f. setacea Kjellman 
Setchell & Gardner, 1903 
Unalaska, Alaska 
FAM. HYPNEACEAE 
Hypneocolax stellaris f. orientalis Weber van 
Bosse 
Dawson, 1961 
Bahia Magdalena, Baja Calif. 
Hypnea boergesenii Tanaka 
Dawson, 1960*2 
Isla Brincanco, Panama 
Hypnea cervicornis J. Agardh 
Taylor, 1945; Dawson, 1957, 1959, 1961 
Isla Guadalupe, Scammon Lagoon, Bahia 
Santa Maria, Baja Calif.; San Felipe to 
Bahia San Lucas, Gulf of Calif.; Guayas, 
Ecuador; Galapagos Arch. 
Hypnea johnstonii Setchell & Gardner 
Dawson, 1958, 1961 
Newport Harbor, Calif.; southern Baja Calif.; 
Gulf of Calif.; Isla San Benedicto; Revilla- 
gigedo Arch.; to San Bias, Nayarit 
Hypnea marchantae Setchell & Gardner 
Taylor, 1945 
Isla Gorgona, Colombia; La Libertad, Ecuador 
Hypnea pannosa J. Agardh 
Dawson, 1954c, 1951b, 1961 
Isla Pond, Gulf of Calif., to Islas Secas, Pa- 
nama; Galapagos Arch. 
Hypnea spicifera ( Suhr ) Harvey ? 
Dawson, 1961 
Mazatlan, Sinaloa 
Hypnea spinella ( C. Agardh ) Kutzing 
Dawson, 1959 b, 1961 
Guaymas, Sonora, to Bahia Petatlan, Guer- 
rero; Clipperton I. 
Hypnea valentiae (Turner) Montagne 
Dawson, 1961 
Santa Barbara, Calif., to Guayas, Ecuador 
Hypnea variabilis Okamura 
Dawson, 1961 
Catalina I.; La Jolla, Calif., to Isla San Roque, 
Baja Calif. 
FAM. PLOCAMIACEAE 
Plocamium coccineum (Hudson) Lyngbye var. 
coccineum 
Farlow, 1902 
Galapagos Arch. 
Plocamium coccineum var. pacificum (Kylin) 
Dawson 
Dawson, 1957, 1959c; Scagel, 1957; Dawson, 
Neushul & Wildman, I960, 1960*2 (all as 
P. pacificum)', Dawson, 1961 
Southern British Columbia to Rocas Alijos 
and Revillagigedo Arch. 
Plocamium oreganum Doty 
Scagel, 1957 
Southern British Columbia to Sonoma Co., 
Calif. 
Plocamium tenue Kylin 
Scagel, 1957; Doty, 1947 
Sitka, Alaska, to South Bay, Oreg. 
