Sere 
ee ee es RT 
168 MR. A. AND MRS. E. S. GEPP ON MARINE ALG AND 
are all so much torn that it is impossible to say what the normal outline of the fron 
may be. It consists of a close reticulum, the minute meshes of which are often almost 
completely filled in by cells or branchlets of later growth (figs. 7, b, and 8, a), somewhat 
recalling Anadyomene. The characteristic tenacula are well developed in this species 
(fig. 9). 
The only branched species of Sírwvea hitherto described are S. ramosa, Dickie, and 
S. delicatula, Kütz. From the former of these, which is about equal in size, our plant 
differs in having a very much smaller mesh with cells half as long as those of S. ramosa. 
From 8. delicatula it differs in being two to three times as large, and in having the 
reticulum of the frond composed of cells of approximately equal diameter, forming a 
much more uniform meshwork. 
ANADYOMENE, Lamour. 
7. ANADYOMENE WRiGHTIL, Harv. apud J. E. Gray in Journ. Bot. iv. (1866) p. 48, tab. 44. 
fig. 5; De Toni, Syll. Alg. i. (1889) p. 367. 
Saya de Malha, 26 fms. Cargados Carajos, 45 and 47 fms. 
This species is not represented by authenticated specimens either in the British 
Museum or in the Kew Herbarium. But the excellent figure and description in 
J. E. Gray’s paper have enabled us to determine our plants and to refer to this species 
no. 7 of Ferguson’s Ceylon alge. 
Geogr. Distr. Loo Choo Islands. Ceylon. 
VALONIACEA. 
D ERIA, Decne. 
8. DicrrospH#RIA FAYULOSA, Decne. Class. des Algues, p. 32; De Toni, Syll. Alg. i. 
(1889) p. 371; Weber van Bosse, in Nuov. Notar. xvi. (1905) p. 143. | 
Coetivy, on reef exposed at dead low tide. Saya de Malha, 25 fms. Cargados Carajos, 
45 fms. Chagos Archipelago, Egmont reef, exposed at dead low tide. 
Geogr. Distr. West Indies. Pacific Ocean. Indian Ocean. 
9. D. VznsLUYsi, Web. v. Bosse, in Nuov. Notar. xvi. (1905) p. 144. 
Coetivy reef. Chagos Archipelago: Salomon and Egmont, on reefs exposed at dead 
. low tide. 
Geogr. Distr, Malay Archipelago. 
_ As stated by the author (/. c.), this species is characterised by being solid throughout 
its life-history, and by bearing on the internal membrane of the cell cellulose hairs, 
which grow towards the interior. This species will be more fully described by 
Madame Weber in her official report upon the alge of the * Siboga ’ Expedition. 
