256 MR. E. M. HOLMES ON MARINE ALGÆ FROM JAPAN. 
The tufts are about two inches high, the lower branches purplish 
red, the upper branches and proliferations pale red. The central 
cells are oval and rather large for the genus. 
GYMNOGONGRUS FURCELLATUS, Ag., var. JAPONICUS, n. var. 
(Pl. XI. fig. 2); ramis fructiferis corymbosis e margine rhachidis 
proliferis. 
Hab. Enoshima, Saida, no. 34. 
In this variety the short branches bearing cystocarps are 
given off from the main stem, below the part where branching 
commences. They are once or rarely twice forked, forming 
small corymbs about half an inch in length ; the cystocarps are 
terminal, or immersed in the terminal ramuli in a single row, 
the portion of the branch where they are formed being dilated to 
twice its normal width, so that these ramuli appear moniliform. 
HYPNEA Sarpana, n. sp. (Pl XI. figs. 3a, 3b); fronde 
compresso-planá, intricatá, flexuosá, parce dichotomá, ramis 
alternis secundis ramulis brevibus horizontalibus obsitá. Fructus 
non visus. Structurá Hypnec. 
Hab. Enoshima, Saida, no. 32. 
This plant evidently belongs to tbe group which contains 
H. pannosa. The branches are intricate and attached at points 
to each other, and are rather stouter than the majority of species 
of the genus. The branches when separated are more or less 
dichotomous, with short, very patent thorn-like ramuli. In 
appearance it closely resembles the figure given by Martens of 
Gelidium aculeatum (* Die Preussische Expedition nach Ost- 
Asien, tab. viii. fig. 4), but I have been enabled, by the courtesy of 
Major Reinbold, to examine an authentic specimen of Martens’s 
plant, which is evidently a Gelidium. 
P CHONDRIA CRASSICAULIS, Harv. (Pl. VIII. figs. 4 a, 4 0, 4c). 
This species was described by Harvey in the ‘ Proceedings of 
the American Academy,’ vol. iv. (1859), p. 329, under the name 
of Chondria crassicaulis, but he had apparently not seen either 
cystocarps or antheridia. My specimens have abundance of 
antheridia, which appear to be only immersed at the base, not in 
a terminal cup, but at intervals over the tips of the fronds; they 
are also more obovate in form and differ entirely in character 
from those of Chondria, in which genus it must, however, pro- 
visionally stand until specimens with cystocarps and tetraspores 
are obtainable. It probably belongs to a new genus. 
