Marine Algae from Eniwetok — Dawson 
103 
Struvea anastomosans (Harvey) Piccone; Daw- 
son 1954: 390, fig. 8 g; Dawson 1956: 30 
D. 13650, 13669, 13863, 13989, 14010. 
Rhipidiphyllon reticulatum Askenasy; Dawson 
1956: 32, fig. 10; Taylor 1950: 45 
D. 13778, 14035a. 
Microdictyon okamurai Setchell; Taylor 1950: 
46, pi. 27, fig. 1; Dawson 1956: 32, fig. 11a 
D. 13762, 13945. P. 54-18, Aitsu Is. sea- 
ward reef rim, 3/10/54; P. 2844, Bogombogo 
Is. seaward tide flats, 10/5/54. 
Microdictyon japonicum is reported by Palumbo 
(1950) from Eniwetok without locality, 
based upon a determination by Lois Eu- 
bank Egerod. 
Anadyomene wrightii Gray; Dawson 1954: 390, 
fig. 9e; Dawson 1956: 31 
D. 13740. 
Chaetomorpha indica Kiitzing; Dawson 1954: 
386, fig. 6f, g; Dawson 1956: 33 
D. 13982. P. 2842, Eneroul Is. seaward 
flats, 9/23/54; P. 2848, Bokanjoio Is. seaward 
flats, 9/29/54. These are apparently of the 
same entangled, free form found at Majuro 
Atoll without holdfast cells. 
Rhizoclonium implexum (Dillwyn) Kiitzing 
1845: 206; Smith 1944: 62, pi. 8, fig. 3. 
Conferva implexa Dillwyn 1809: 46, pi. B 
(England) 
Fig. Aa 
D. 13835, 14049a. This species is treated 
by Hamel under his genus Lola. 
Cladophora crystallina (Roth) Kiitzing; Daw- 
son 1956: 33, fig. 13b, c 
D. 13923. The branches in this material 
range from 85 to 30 g or less in diameter. 
Cladophora inserta Dickie, variations; Dawson 
1954: 388, fig. 7d (as C. inserta var. ungulata ) 
Fig. 4. a , Rhizoclonium implexum : Parts of filaments, 
X 80. b, Cladophora socialis: Part of a plant of D. 13742 
near the typical form of the species, X 17. 
D. 13837, 13857, 13903b. P. 2813, Bokan- 
joio Is. lagoon on stake in 3-8 ft., 3/8/55. 
Some of these specimens apparently corres- 
pond with var. ungulata (Brand) Setchell. 
Cladophora socialis Kiitzing; Dawson 1956: 
34; Dawson 1954: 388, fig. 7e (as C. 
patentiramea var. longiarticulata Reinbold) 
Fig. Ah 
D. 13699, 13742, 13806. These specimens 
seem to represent the same species collected 
by the writer in Viet Nam and at Jaluit Atoll 
in the Marshall Islands. D. 13699 agrees 
especially well with B0rgesen’s Mauritius 
plant called C. patentiramea in 1940. 
Cladophora luteola Harvey is reported by Pa- 
lumbo (1950) from Eniwetok based upon 
a determination by F. Drouet, but a spec- 
imen so named by him from Bikini Atoll 
seems to be Boodlea. 
Entocladia viridis Reinke; Dawson 1954: 388, 
fig. 7i 
D. 13835a, in the cell wall of Rhizoclonium. 
