442 
Centro cer as clavulatum (C Agardh) Montagne 
var. clavulatum 
Dawson, 1954, 1954c, 1957, 1957&, 1959, 
1959c; Taylor, 1945 
Santa Cruz, Calif., to Panama; Galapagos 
Arch. 
Centroceras clavulatum var. inerme (Kiitzing) 
Piccone 
Dawson, 1957 
Galapagos Arch. 
Centroceras minutum Yamada 
Dawson, I960* 
Isla Brincanco, Panama 
Micro cladia borealis Ruprecht 
Okamura, 1933; Scagel, 1957 
Aleutian Islands, Alaska, to San Simeon, Calif. 
Microcladia calif ornica Farlow 
Smith, 1944 
San Francisco to San Diego, Calif. 
Microcladia coulteri Harvey 
Dawson, 1954, 1959c, Scagel, 1957; Dawson, 
Neushul & Wildman, I960 
Vancouver L, British Columbia, to Punta 
Santa Rosalia, Baja Calif. 
Neoptilota asplenioides ( Esper ) Kylin 
Kylin, 1956; Scagel, 1957 (as Ptilota aspleni- 
oides ) 
Yakutat Bay, Alaska, to Puget Sound, Wash. 
Neoptilota calif ornica (Ruprecht) Kylin 
Kylin, 1956; Scagel, 1957 (as Ptilota Cali- 
fornia ) 
Northern British Columbia to San Diego, 
Calif. 
Neoptilota densa (C. Agardh) Kylin 
Kylin, 1956; Dawson, 1954 (as Plumaria 
densa); Smith, 1944; Dawson, 1945& 
both as Ptilota densa ) 
Tomales Bay, Calif., to Punta Baja, Baja Calif. 
Neoptilota hypnoides ( Harvey ) Kylin 
Kylin, 1956; Scagel, 1957 (as Ptilota hyp- 
noides ) 
Sitka, Alaska, to San Luis Obispo Co., Calif. 
PACIFIC SCIENCE, Vol. XV, July 1961 
Ptilota filicina (Farlow) J. Agardh 
Kylin, 1956; Scagel, 1957; Dawson, 1954 (as 
Plumaria filicina); Dawson, 1949*, 1959c 
( both as Ptilota filicina ) 
Bering Sea to Cabo Colnett, Baja Calif. 
Ptilota pectinata (Gunner) Kjellman 
Kylin, 1956; Scagel, 1957 
Bering Sea to Puget Sound, Wash. 
Ptilota tenuis Kylin 
Kylin, 1956; Scagel, 1957 
Northern British Columbia to northern 
Wash. 
Spyridia filamentosa (Wulfen) Harvey 
Kylin, 1941; Taylor, 1945; Dawson, 1954, 
1957b 
Southern Calif, to Panama 
W rangelia argus (Montagne) Montagne 
Dawson, I960* 
Punta Naranja, Panama 
Callithamnion acutum Kylin 
Scagel, 1957 
Northern Wash. 
Callithamnion arborescens Gardner 
Gardner, 1927 h 
Sitka, Alaska 
Callithamnion biseriatum Kylin 
Scagel, 1957 
Northern British Columbia to Monterey, 
Calif. 
Callithamnion hisporum Gardner 
Scagel, 1957 
Northern Wash. 
Callithamnion breviramosum Gardner 
Gardner, 1927c 
La Jolla, Calif. 
Callithamnion byssoides Arnott 
Dawson, 1954, I960* 
Isla Guadalupe, Baja Calif. 
