104 
PACIFIC SCIENCE, Vol. XI, January, 1957 
Derbesia attenuata Dawson 1954: 390, fig. 
9a, b; Dawson 1956: 34 
D. 13999b, epiphytic on Halimeda; D. 
13767a, on small algae. 
Derbesia marina (Lyngbye) Sober; Dawson 
1956: 34, fig. 15a, b 
D. 14006a, epiphytic on Caulerpa . 
Derbesia ryukiuensis Yamada and Tanaka; Daw- 
son 1956: 34, fig. 14b 
D. 13710, 13791. 
Bryopsis indica A. and Ethel Gepp; Dawson 
1956: 34, fig. 14a; Taylor 1950: 50 
D. 13730. 
Bryopsis hypnoides Lamouroux 1809: 135, pi. 5, 
fig. 2 (Mediterranean Sea); Hamel 1931: 
394, fig. 20 B; Smith 1944: 73, pi. 9, fig. 2 
Fig. 5 a, b 
D. 13977. 
Bryopsis pennata Lamouroux; Taylor 1950: 51; 
Dawson 1954: 393, fig. lib; Dawson 1956: 
34 
D. 13703, 13797, 13859, 13907. P. 2855, 
Bogallua Is. lagoon pavement, 11/17/54. 
Considerable variation in branching occurs 
between examples corresponding to the type 
of the species and those better referred to the 
following variety. 
Bryopsis pennata var. secunda (Harvey) Collins 
and Hervey 1917: 62; Taylor 1950: 52. 
Bryopsis plum os a var. secunda Harvey 1858: 
31, pi. 45A, figs. 1-3 (Key West, Florida) 
P. 52-31, Aomon Is. seaward reef, 10/22/ 
52; P. 52-110, Engebi Is. lagoon, 11/8/52; 
P. 2585, Aitsu Is. 2/11/55; P. 2851, Bogom- 
bogo Is. seaward flats, 10/5/54; P. 2857, 
Aitsu Is. lagoon, 11/17/54. 
Caulerpa acuta (Yamada) Yamada 1944: 34. 
Caulerpa filicoides Yamada 1936: 135, pi. 
30, fig. 2. Caulerpa verticillata f. acuta Ya- 
mada 1934: 63, fig. 32 (Naha, Ryukyu 
Archipelago) 
Figs. 6, 7 
D. 13875, 13971, 14050. 
Caulerpa antoensis Yamada; Dawson 1956: 36, 
fig. 20; Taylor 1950: 55, pi. 28, fig. 2 (as 
C. arenicola Taylor) 
D. 13832. 
Caulerpa bikiniensis Taylor 1950: 66, pi. 33 
(Bikini Atoll, Marshall Is.) 
D. 13774. The material is rather small and 
incompletely developed, but is apparently 
identical with Taylor’s Bikini and Rogelap 
specimens. The problem of its relationship 
and possible varietal status in the Caulerpa 
racemosa complex cannot be taken up here. 
Caulerpa brachypus Harvey 1859: 332 (Japan); 
Taylor 1950: 56, pi. 29, fig. 2 
T. 46-422. Not collected again. 
Fig. 5. Bryopsis hypnoides : a , Habit of part of a plant 
of D. 13977, X 5 ; b, detail of branching of the same, 
X 45. 
