Benthic Algae— DAWSON 
391 
Compsonema nummuloides Setchell & Gardner 
Setchell & Gardner, 1925 
Moss Beach, Calif. 
Compsonema pusillum Setchell & Gardner 
Smith, 1944 
Carmel, Calif. 
Compsonema r amnio sum Setchell & Gardner 
Smith, 1944 
Carmel, Calif. 
Compsonema secundum Setchell & Gardner 
Smith, 1944 
Moclips, Wash., to Carmel, Calif. 
Compsonema serpens Setchell & Gardner 
Smith, 1944 
Monterey Peninsula, Calif. 
Compsonema sessile Setchell & Gardner 
Scagel, 1957 
Meah Bay, Wash. 
Compsonema speciosum f. piliferum Setchell & 
Gardner 
Setchell & Gardner, 1925 
Moclips, Wash. 
Compsonema sporangiiferum Setchell & Gard- 
ner 
Scagel, 1957 
Neah Bay, Wash. 
Compsonema streblonematoides Setchell & 
Gardner 
Setchell & Gardner, 1925 
Tomales Bay, Calif. 
Compsonema tenue Setchell & Gardner 
Setchell & Gardner, 1925 
Sitka, Alaska 
Hecatonema clavatum Setchell & Gardner 
Setchell & Gardner, 1925 
Tomales Bay, Calif. 
Hecatonema lawsonii Setchell & Gardner 
Setchell & Gardner, 1925 
Uyak Bay, Alaska 
Hecatonema variabile Setchell & Gardner 
Smith, 1944 
Monterey Peninsula, Calif. 
FAM. ELACHISTACEAE 
Halotbrix lumbricalis ( Kiitzing ) <. Reinke 
Dawson, 1954 
Isla Guadalupe, Baja Calif. 
Elachistea fucicola (Velley) Areschoug 
Scagel, 1957 
Sitka, Alaska, to Coos Bay, Oreg. 
Elachistea lubrica Ruprecht 
Setchell & Gardner, 1925 
Prince William Sound to Wrangell, Alaska 
Gonodia johnstonii Setchell & Gardner 
Dawson, 1954 
Isla San Marcos, Gulf of Calif. 
Gonodia mar chant ae Setchell & Gardner 
Dawson, 1954 
La Paz, Gulf of Calif. 
fam. CORYNOPHLOEACEAE 
Petrospongium rugosum (Okamura) Setchell & 
Gardner 
Smith, 1944; Dawson, 1954, 1959c 
San Mateo Co., Calif., to Bahia Asuncion, 
Baja Calif. 
Leathesia difformis ( Linnaeus ) Areschoug 
Coe, 1932; Dawson, 1954; Scagel, 1957; Daw- 
son, 1959c 
Bering Sea to Bahia Asuncion, Baja Calif. 
Leathesia nana Setchell & Gardner 
Smith, 1944; Doty, 1947; Dawson, 1958, 
1959c 
Or eg.; Monterey Peninsula; Carpinteria, Calif. 
fam. CHORDARIACEAE 
Eudesme vires cens (Carmichael) J. Agardh 
Scagel, 1957 
Shumagin I. to Sitka, Alaska; La Jolla, Calif. 
