Marine Plants of Nha Trang — Dawson 
Fig. 45. THanophora pulchra: Habit, X 1. 
lets, constricted at their bases, are character' 
istic. The texture is much firmer than that of 
G. filicina. 
Halymenia dilatata Zanardini 1851: 35 
(Massaua, Red Sea); Okamura 1921, leones 
4: 109, pis. 176, 177, figs. 3, 4 
Fig. 43 
LOCAL DISTRIBUTION: On rocks and coral 
in 2-4 m., Sta. 2 (11440). 
Although I have been unable to compare 
with the type or other material from the In- 
dian Ocean region, my specimens agree quite 
fully with this species as interpreted by Oka- 
mura. His specimens came from sublittoral 
habitats in the Ryukyu Islands and southern 
Japan. 
Halymenia maculata J. Agardh 1885: 12 
(Mauritius); B0rgesen 1950: 9, figs. 2, 3 
Fig. 44 
LOCAL DISTRIBUTION: Frequent on coral in 
2-3 m., Sta. 2 (11441). 
B0rgesen’s figures show close morpholo- 
gical and anatomical agreement with my spec- 
imens, even as to the peculiar, much-elongated, 
papilla-like outer cortical cells. The occur- 
rence of this species in Viet Nam is notable 
inasmuch as it has been presumed to be en- 
demic in Mauritius. 
Titanophora pulchra sp. nov. 
Figs. 45, 46^, h 
Thallo 6-9 cm. alto, lubrico, leviter calci- 
