108 
Avrainvillea lacerata Harvey ex J. Agardh 
1887: 54 (Friendly Islands, -Tonga); A. and 
Ethel Gepp 1911: 38, figs. 105-109; Taylor 
1950:70 
Fig. lib 
D. 13629. 
Rhipilia geppii Taylor 1950: 70, pi. 35 (Bikini 
Atoll, Marshall Islands) 
D. 13721, 13889. P. 13x, Aaraanbiru Is. 
seaward reef margin, 3/7/54. 
Rhipilia diaphana Taylor 1950: 72, pi. 37 
(Bikini Atoll, Marshall Islands) 
T. 46-425. Not collected again. 
Rhipilia orientalis A. and Ethel Gepp; Taylor 
1950: 72, pi. 36, fig. 1; Dawson 1956: 40 
D. 13761, 13877, 13888. 
Udotea palmetta var. marshallensis var. nov. 
Dawson 1956: 40, fig. 28a, b, c (as U. 
palmetto) ; Taylor 1950: 74 (as U . indica , 
at least in part) 
Like the type, but the blade filament ap- 
pendages in a single row, simple, blunt- 
conical, not forked. 
A typo differt in appendiculis filamentae 
laminae in serie simplici efurcatis obtusi- 
conicis. 
TYPE: Dawson 13727, Aniyaanii Island, 
seaward reef on the coralline ridge, August 
22, 1955. 
ADDITIONAL material: Kwajalein Atoll. 
D. 12554; Majuro Atoll. Horwitz 9576, 
9599c, 9340a, 9390e; Eniwetok Atoll. T. 46- 
386, D. 13829, D. 13634, D. 13894, P. 2588a, 
Bogallua Is. lagoon rock pavement, 2/11/55, 
P. 54-33, Mui Is. seaward reef, 3/11/54, P. 
2581a, Aaraanbiru Is. s.w. tip in channel, 
2/11/55. 
This considerable number of specimens 
has been found to show such consistent 
minor differences in the form of the blade 
filament appendages from the Indian Ocean 
type that there appears to be ample justifica- 
tion for its recognition under a distinctive 
PACIFIC SCIENCE, Vol. XI, January, 1957 
subspecific name. One of Taylor’s Eniwetok 
specimens referred by him to U. indica has 
been examined and found to be identical with 
the other Marshall Islands material. Presum- 
ably, his Rongerik, Rongelap and Bikini 
specimens treated as U. indica are also of this 
same plant. 
Udotea javensis (Montagne) A. and Ethel 
Gepp; Dawson 1954: 395, fig. 13b, c; 
Dawson 1956: 40; Taylor 1950: 73 
D. 13694, 13787, 13949. 
Tydemannia expeditions Weber van Bosse; 
Dawson 1956: 41; Taylor 1950: 73, pi. 38, 
fig. i 
D. 13962, 13997. 
Halimeda gigas Taylor 1950: 84, pi. 44, fig. 2 
(Eniwetok Atoll) 
D. 13948, 13968, 13996. P. 1996, VS mile 
off Parry Is. in lagoon at 140 ft., 9/9/54; P. 
1947, Va mi. off Parry Is. in lagoon at 135 ft., 
9/4/54; P. 2625, Parry Is. lagoon at 100 ft., 
3/14/55; P. 2688, 114 mile off Rigili Is. in 
lagoon at 60 ft., 3/16/55. 
Halimeda macrophysa Askenasy 1888: 14, pi. 
4, figs. 1-4 (Matuku Is., South Pacific); 
Barton 1901: 17, pi. 2, figs. 15-18 
Fig. 12 
D. 13879, 13897. 
Halimeda monile (Solander) Lamouroux; Tay- 
lor 1950: 92, pi. 50, fig. 1; Dawson 1956: 41 
D. 13706, 13836, 13937, 13953, 13969- P. 
2828, 114 mi. off Igurin Is. in lagoon at 50 ft., 
3/8/55; P. 1993, 14 mi. off Parry Is. in lagoon 
at 140 ft., 9/9/54; P. 2687, 114 mi. off Rigili 
Is. in lagoon at 60 ft., 3/16/55; P. 2620, 114 
mi. off Aaraanbiru Is. in lagoon at 70 ft., 
3/11/55. 
Halimeda lacunalis Taylor 1950: 91, pi. 51 
(Eniwetok Atoll) 
P. 2814, Bokanjoio Is, in lagoon off s.e. 
end of island at 60 ft., 3/8/55. 
