MR. E. M. HOLMES ON MARINE ALGZ FROM JAPAN. 253 
Hab. Shimoda, Saida, no. 44. 
This species is about 2-3 inches high, twice or thrice-forked 
from near the base, and the segments are divergent at a wide 
angle, varying from 3-4 inch in diameter, with rounded axils. 
At the base the frond tapers to a point, and the branches are 
slightly constricted at intervals. The cystocarps are surrounded 
with a raised ring, giving them an ocellate appearance. 
GRACILARIA CHORDA, n. sp.; fronde tereti succulenta, 
exsiccatione collabente, submembranaceá, cartilagineá, parce 
dichotomo - racemosa, ramis prelongis simplicibus nudis 2-3- 
pedalis; sphzrosporis cruciatis, in strato corticali nidulantibus ; 
colore purpureo. 
Hab. Enoura, Saida, no. 6. 
This remarkable plant bears a strong resemblance in size and 
habit to Chorda Filum, Stackh. The specimens received are not 
entire; but, although between 2 and 3 feet long, there are only 
three branches at the base at intervals of 2 inches apart, one of 
these being again forked at a distance of 2 inches. The internal 
cells are proportionately very large. The diameter of the stem 
when dry is about 1 line. 
GRACILARIA FLEXUOSA, n. sp.; fronde tereti, filiformi, corneo- 
cartilaginea, rigidà, ad 6 poll. longa, flexuosa, alterne pinnata, 
ramis simplicibus, erecto-patentibus, apicibus sepe divaricatis. 
Hab. Shimoda, Saida, no. 75. 
This species bears considerable resemblance to G. opaca, J. Ag. ; 
but it is less branched, and the stem is horny like that of 
G. dura, than which it is more slender. The central cells are 
much larger than the subcortical cells, which form a tolerably 
firm and dense layer. 
GRATELOUPIA ELLIPTICA, n. sp. ; fronde carnoso-planá, cuneato- 
dilatatá, repetiter palmatá, prolifera, segmentis latis ellipticis 
obovato-lanceolatisve, dense confertis, chartz arcte adherente; 
colore violaceo-purpureo ; sphzrosporis cruciatis in strato corticali 
immersis. 
Hab. Enoshima, Ohkubo, no. 4. 
The specimen received is incomplete at the base; the primary 
frond bears 4 or 5 large fronds at its apex, which are proliferous 
from the injured margins and apices; the principal segmeuts are 
elliptical in outline, 2-3 inches broad and 3-9 inches long. It 
