FROM THE FALKLAND ISLANDS. 191 
Disrris. S. Chile, Fuegia, Falklands, Southern Australia, New Zealand, 
Auckland Island. 
A much less common species, and with a more restricted distribution. 
ANTITHAMNION FLACCIDUM, De Toni, Syll. Alg. iv. р. 1414. Callithamnion 
flaccidum, Hook. f. et Harv. in Lond. Journ. Bot. iv. (1845) p. 273; Fl. Ant. 
ii. p. 490, tab. 188. fig. 1. 
М. Falklands ; West Point Island, Roy Cove, Vallentin. 
DisrRIB. Fuegia, Falkland Islands ; (New Zealand ?). 
New to the Falkland Islands. The irregular branching noted by Hooker 
& Harvey is shown to a remarkable extent, but there can be no doubt that 
these authors were correct in referring all plants to one species. The New 
Zealand plant, known under the name of А. flaccidum, will probably prove to 
be a distinct species. 
CERAMIUM RUBRUM, Ад. Sp. ii. p. 146 ; Hook. f. et Harv. in Fl. Ant. ii. 
p. 488. 
Falkland Islands, general, all collectors. 
DisrriB. Cosmopolitan. 
Found abundantly in the W. Falklands by Mrs. Vallentin, and represented 
in a variety of forms in all collections. 
C. DIAPHANUM, Roth, Cat. Bot. iii. p. 154 ; Hook. f. et Harv.in Fl. Ant. ii. 
p. 488. 
E. Falklands, Hooker. W. Falklands ; Shallow Bay, Vallentin. 
Distris. Probably cosmopolitan. 
Dr. H. E. Petersen of Copenhagen has been kind enough to examine 
Mrs. Vallentin’s diaphanous Ceramia, and he is of opinion that, with the 
exception af one specimen, they should all be referred to C. diaphanum. 
C. stricrum, Grev. et Harv. in Нате. Phyc. Brit. p. xi, tab. 334. 
Е. Falklands (teste Agardh. W. Falklands ; Shallow Bay, Vallentin. 
DISTRIB. Probably cosmopolitan, 
Вноросновтох MEMBRANACEUM, Magnus, Bot. Lrg. Nordseef. р. 67, tab. 2. 
figs. 7-15 ; Kuckuck, Beitr. ii. pp. 13-24, figs. 1-7. 
W. Falklands ; West Point Island, Hennis, Dunmose Head, Vallentin. 
DisrriB. N. Atlantic (Europe and America). 
The first record of the genus for the islands. The present species is 
endozoie, and occurred in the Hydroid zoophyte, Sertularella polyzonias 
(Linn.), a species which is almost cosmopolitan in its distribution. At first 
it seemed as though the alga differed from the well-known Atlantic form in 
