254 MR. E. M. HOLMES ON MARINE ALGÆ FROM JAPAN. 
becomes much more easily disintegrated in salt water than 
G. Ohkuboana, so that it is almost impossible to remount it 
without injury. A younger specimen with the base attached, 
apparently the same species, has the lobes less elliptical and more 
rounded at the apex. 
GRATELOUPTA FLABELLATA, n. sp. (Pl. IX. figs. 3 a, 3 b.); fronde 
gelatinoso- membranaceá, a stipite brevi flabellatim expansa, 
segmentis repetiter dichotomis apice subpalmatis obtusis, axillis 
rotundatis; colore purpureo. 
Hab. Enoshima, Ohkubo, no. 37. 
This plant resembles in form and substance very robust spe- 
cimens of G. dichotoma, J. Ag. The plant is about 2-3 inches 
high, and 4 inches in width when spread out on paper; and the 
segments are about 1 of an inch in width, but dilated below the 
axils; they are more regularly palmate at the apices than in 
G. dichotoma, J. Ag. 
GRATELOUPIA ACUMINATA, n. sp. (Pl. X. figs. 2a, 25, 2c); 
fronde gelatinoso-carnosá, latiusculá, planá, tripinnatá, segmentis 
elongato-ensiformibus longe acuminatis, ciliatis; colore roseo; 
cystoearpiis nucleo simplici, in strato corticali semi-immersis. 
Hab. Enoshima, Ohkubo, no. 23. 
A large and very beautiful species, probably 18 inches or 
2 feet long. The main branches are about 2-3 inch wide and 
12 inches long, the margins being fringed with linear tapering 
segments about j inch apart; these again are ciliated with 
minute branchlets. The cystocarps, which are small, are scattered 
all over the older parts of the frond. The structure, in my 
opinion, bears considerable resemblance to that of Halymenia 
latifolia, and in colour and substance it resembles that genus ; 
but in deference to the much greater experience of Professor 
J. G. Agardh, who has seen the plant, I have placed it in the 
genus Grateloupia. 
GRATELOUPIA FURCATA, n. sp. (Pl. X. figs. 3a, 3b, 3 c); 
fronde gelatinoso-membranaceá, repetiter dichotomá, stipite 
inferne tereti, mox compressá expansá, segmentis inferioribus 
cuneato-linearibus, superioribus elongatis, ligulatis, tortis vel 
undulatis ad apices fructus proliferis; colore amethystino- 
purpureo. 
Hab. Shimoda, Saida, no. 44. 
