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Falklands, etc.] CRYPTOGAMIA ANTARCTICA. 191 
non (suadente clariss. Berkeley), eum Bysso aquatico, D.C., (Geneva Trans. vol. ii. p. 29,), Oscillatoria rubescente, 
Bory et cum Conferva purpurea quoque conferenda. Fila muscos submersos strato gelatinoso translucente ves- 
tientia, dum maxime amplificata lineis transversis obscure notata. 
2. OSCILLATORIA autumnalis, Agardh Syst. p.62.; Harvey, Manual of Brit. Alg. p. 165. 
Has. Falkland Islands; on wet rocks; Cockburn Island, Graham’s Land (Lat. 64° S. Long. 57?.W.) 
in moist places. 
We have carefully compared this with Captain Carmichael's Appin specimens of O. autumnalis, and find them 
to be quite the same species, which is considered common in England, though Mr. Hassall quotes Captain Car- 
michael’s habitat as the only one. The figure in the last named author's * British Fresh-water Algee,’ is very unlike 
either Captain Carmichael's or the Antarctic specimens ; in both of which the strise are nearer to one another than 
the filament is broad. The diameter of the Cockburn Island filaments is 4415; of an inch. 
49. CALOTHRIX, ۰ 
1. CALOTHRIX olivacea, Hook. fil. et Harv.; ceespite majusculo intense olivaceo v. «erugescente erecto 
strictiusculo, filis basi-dichotome v. alterne divisis luteis flavidisve superne strictiusculis flexuosisve in 
funieulos crispatos tenaces cohserentibus per totam longitudinem connexisve apice liberis obtusiusculis, 
endochromate opaco obscure striato, articulis diametro longioribus brevioribusve. Nobis i» Lond. Journ. 
Bot. vol. iv. p. 296. (Tas. CXC. Fig. 111.) 
Haz. Christmas Harbour, Kerguelen's Land; in alpine rivulets, adhering to stems and leaves of 
mosses, &c. 
Cespites fasciculati, interdum extensi, 4 unc. longi, intense colorati, olivacei leete «erugescentesve, siceitate vix 
nitentes. Fila C. distorta multoties latiora, flexuosa sed non torta, seepissime in fasciculos siccitate crispatos connexa, 
circa 3727 unc. lata, basi flavescentia, ramosa v. divisa. 
A very pretty species and quite distinct from any European one with which we are acquainted. 
Prare CXC. Fig. III. —1, plant of the natural size; 2, filaments; 3, upper, and 4, lower portion of ditto :— 
much magnified. 
2. CALOTHRIX DISTORTA, Harvey, Manual of Brit. Alg. p. 158. Engl. Bot. t. 257. 
Has. Falkland Islands ; in pools of fresh water. 
The specimens, though in a very indifferent state, are clearly referable to the English C. distorta. 
50. LINGBYA, Ay. 
1. Lyyepya muralis, Agardh ; Conferva muralis, Dillwyn, Brit. Conferv. t. vii. 
Has. Falkland Islands ; on the ground, abundant. 
These we have carefully compared with original British specimens of Z. muralis, and find them to differ only in 
having the filaments rather broader and more opaque. 
2. Lynepya fragilis, Hook. fil. et Harv. ; filis minutis tenuissimis fragilibus flavo-viridibus tortuosis 
implexis in stratum tenue lutescens cohserentibus, striis densissimis. Nobis im Lond. Journ. Bot. vol. iv. 
p.296. (Tas. CXCIIL Fig. IL) 
Haz. Berkeley Sound, Falkland Islands; on the fur of a dead rabbit. 
Fila L. murali subsimillima, sed diametro 4 angustiora, fragillimaque. Stratum tenue, lutescens v. flavo-vires- 
cens, vix nitens. 
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