252 MR. E. M. HOLMES ON MARINE ALGÆ FROM JAPAN. 
This species resembles Zonaria nigrescens, Sond., in colour and 
texture, but it does not present the distinctly parallel lines of 
cells characteristic of Zonaria. The most prominent feature in 
the plant is the distinct trunk or stem from which the fronds are 
given off at intervals. This stem is about 1 inch high, forked 
near the base, each branch bearing about two large and two 
smaller fronds. The fibrous layer scarcely extends beyond the 
linear base of each frond. The mature fronds are about 2 inches 
high and 2 inches broad. The section of the frond shows about 
six layers of colourless quadrate cells between the upper and lower 
layer of coloured cortical cells. 
RHODOPHYCER. 
AMANSIA MULTIFIDA, Lams., var. JAPONICA, n. var. ; fronde 
ramis pinnatis, pyramidatis, inferne tenui-costatá, ramulis 
secundariis ejusdem diametro sepius quadruplo distantibus ; 
colore purpureo. 
Hab. Enoshima, Ohkubo, no. 17. 
The Japanese variety of this plant does not present any very 
marked characters to separate it from A. multifida, Lamx., 
although the colouris quite different. In the specimen received 
the nerve is very indistinct, and there are no proliferous branches 
from the midrib ; the secondary branches are less crowded than in 
the type. 
CHONDRUS ELATUS, n. sp. (Pl. IX. fig. 1); fronde cæspitosâ 
lineari, apices versus bis terve furcatá, ramis obtusis basi 
attenuatis, a latere sparse proliferis, fructiferis flexuose dilatatis, 
cystocarpiis in ramos terminales aggregatis, in utráque paginá 
prominentibus. 
Hab. Enoshima, Ohkubo, no. 30. 
The fronds are uniformly 1-14 lines in diameter, and about 6-8 
inches long, rarely branching below the middle. The substance 
is firm, somewhat rigid, the plants bearing considerable resem- 
blance in form and substance to Gymnogongrus linearis; but the 
branches are more arcuate and divaricate, and the structure is 
different. The cystocarps are slightly prominent on both sides. 
CuoNDRUS OCELLATUS, n. sp. (Pl. IX. fig. 2) ; fronde eespitosá 
plana coriaceé bis terve furcatá, sursum margine incrassata, 
segmentis paucis, oblongo-lanceolatis, apice obtusis, cystocarpiis 
in ramis, numerosis, ocellatis ; colore saturate violaceo-purpureo. 
