184 MR. A. AND MRS. E. S. GEPP ON MARINE ALGZ AND 
Chagos Archipelago. Stolons emerge from the base of the stem, but in Turbinaria 
ornata they are somewhat flattened or sometimes bluntly triquetrous, not cylindrical as 
in T. Murrayana. From these stolons arise young plantlets less regular in habit than 
those of T. Murrayana, and consisting of only one or two straggling linear-lanceolate 
grossly serrate first leaves (fig. 27), which are abruptly succeeded without any transitional 
stages by the normal trigonous leaves of the genus, though leaves with the specific 
character of a double row of teeth do not appear till later. Another noteworthy feature 
of T. ornata is that the stolons are apparently not confined to the base of the mature 
plant; for similar outgrowths often arise from the receptacular branches, either together 
with or in the place of the fertile branches. 
We would here insert a note about Turbinaria dentata, Bart., and its identity with 
T. condensata, Sond. 
In 1891 one of us published a new species of Turbinaria, T. dentata (Trans. Linn. Soc. 
ser. 2, Bot. iii. (1891) p. 219, pl. 54. fig. 5), founded on a specimen collected at Macassar 
by Madame Weber van Bosse. The distinguishing feature of this species was the small 
leaf crowned by sharp teeth, which extend down the angles of the vesicle. In the same 
paper, 7. condensata, Sond., was mentioned (/. c. p. 220), and as the species was 
unknown to the author, she contented herself with transcribing the original diagnosis 
(Kütz. Tab. Phye. x. 1860, p. 25). Figures of T. condensata, natural size, and of an 
enlarged vesicle crowned with teeth are given (J. c. tab. 69. figs. 2, 3); but in the 
absence of an authentic specimen of T. condensata the author did not regard that species 
as identical with her 7. dentata, as there seemed to be some slight differences between 
her plant and the Kiitzing figure. Some time ago, however, Major Reinbold was so kind 
as to send to the author part of Sonder's original specimen of 7. condensata, and at 
once it became evident that that species and Z. dentata, E. S. Bart., are identical. The 
only difference between them is that in the Macassar plant the teeth are found regularly 
marking the angles of the vesicles, whereas in T. condensata the teeth are often 
confined to the crown at the top. This difference, however, amounts to nothing, and 
we therefore annul 7. dentata, E. S. Bart., which must now be ranked as a mere synonym 
of T. condensata, Sond. 
ZONARIA, J. Ag. 
44. ZONARIA VARIEGATA, Mart. in Mart. Icon. Crypt. tab. 2. fig. 2; Sauvageau, in Soc. 
Sc. d'Arcachon Stat. Biol. Trav. Lab. viii. (1904-5) Paris, 1905, pp. 66-81. 
Syn. Gymnosorus variegatus, J. Ag. Anal. Alg. cont. i. (1894) p. 11; De Toni, Syll. Alg. iii. 
p. 227 (1895). 
Ralfsia ceylanica, Harv. ex Gepp, in Journ. Linn. Soc., Bot. xxxv. (1903) p. 477, tab. 18. figs. 1-4. 
Zonaria Isselii, Piccone & Grunow, in Nuov. Giorn. Bot. Ital. xvi. (1884) p. 297, tab. 7. figs. 1-4, 
tab. 9. fig. 1. 
Coetivy, on reef, and at 32 feet obtained by diver. Saya de Malha, 26 fms. 
Chagos Archipelago : Salomon reef; Egmont reef ; Diego Garcia lagoon. 
Geogr. Distr. N. & S. Atlantic. Pacific. Indian Ocean. 
