371 
internal cells characteristic of that genus are however entirely 
absent. The structure on the other hand is that of a corticated 
Ceramium to which genus it undoubtedly belongs* From the 
dried material it appears to be a rather delicate and fragile species, 
not unlike in general appearance some of the slender forms of 
C. nihrum. Owing to the absence of tetrasporic plants it is 
impossible to say in which section of the genus it should be placed. 
This plant has been twice received from Wonsen, but on both 
occasions the specimens were sterile. Gampyliomhorn /nfjiwiuWea 
also, is only known in the sterile state ; tetraspores have been 
recorded as occurring in the swollen branches, but this has not 
been confirmed, and it certainly is not usually the case. 
Ceramium rubrum, Ag.; De Toni Syll. Alg. vol. iv., p. 1476. 
Wonsen, Feb. and Oct. 1905, Wakefield. 
Numerous tufts of a form of this cosmopolitan species were 
found mixed with, or epiphytic upon, the larger algae. 
Distribution. Cosmopolitan. 
Ceramium Boydenii, Qqpp, Journ. of Bot. vol. xlii., 1901, p. 164, 
plate 460, fig. 1-3. 
Wonsen, Oct. 1905, Wakefield. 
from China and Japan. The Coivau plants a-nv in all -vn.Tal 
characters and show the tetraspores borne in the same irregularly 
shaped ramuli. Their whole appearance tends to confirm 
Mrs. Gepp's suggestion that this species has a creeping habit. 
Distribution. Japan, China. 
Grateloupia divaricata, Okam,; De Toni Syll. Alg. vol. iv., 
p. 1570. 
Wonsen, Oct. 1905, Wakefield, 
As remarked by Okamura this alga ._ 
between G.filicina, Ag., and G. dichotoma J. Ag.^- 
appear to be much more nearly^ „ ^ ^ found 
the former than the 
latterf To"theTyplcal l^rms of G. dichotoma such ; 
on the S.W. coast of En-land and in the Mediterranean, it bears 
little resemblance, the latter plant possessing re pe atedly forked 
branches which are quite devoid of the ^etospore-beanng 
proliferations that are characteristic 
G. dichotoma is also much sir- 11 -- 
regular. Several taropi 
loupenses, have been referred w . 
to these the Japanese plant bears more fff mb /^^i^ 
careful examination these cannot be regarded as the same species 
as that described by Agardh. . 
On the other hand G. divaricata shows ™?^%£^j£ n 
appearance and size with ti.fili.-h,.,. A,'., an- a .- n £«£* 
be confined to the proliferations. 
