MARINE ALGA, 9 
While referring to the southern species of Desmarestia, it may be worth while to 
point out a slight error in the key to the species which Reinsch publishes in Flora, 1888, 
pp. 189, 190. He classes J. chordalis with D. viridis as having its ultimate pinnules 
uncorticated. He had apparently never seen D. chordalis, and he misinterpreted 
Harvey's “apice longe nudis” (Flor. Antarct. Part IL, p. 467) as meaning uncorticated, 
whereas it simply means unarmed with spinules. We would point out that in D. 
harveyana the axial hyphe are corticated to the very tips of the ultimate ramuli 
(fig. 12). 
5. EcrocaRPUS GEMINATUS. 
Ectocarpus geminatus Hook. et Harv., London Journal of Botany IV. (1845) p. 251. 
Cape Adare, with plurilocular sporangia, epiphytic on Desmarestia harveyana. 
Geogr. Distr.—Cape Horn, Falkland Islands, Kerguelen. 
This species is well figured by Hariot in Mission Scientifique du Cap Horn 
(1882-3), tom. v. 1889, Algz, pl. 3, figs. 1, 2. Our attention has been called by Dr. 
Carl Skottsberg to Reinke’s note in the Atlas Deutscher Meeresalgen II. 1892, p. 46, 
where he proposes to transfer this species to the genus /sthmoplea. 
FLORIDEZ. 
6. [RIDAA MICANS, 
Tridea micans Bory, Voyage Coquille, 1828, p. 110, tt. 13, 138, 
MeMurdo Strait, upon the ice of Bay between Black and White Islands, among a 
heap of sandy matter, a mile north of rock-débris heaps, five miles north of tide-crack 
at head of bay, September 14, 1902. 
Geoer. Distr.—Falkland Islands, Cape Horn, Valparaiso, Auckland Islands. 
A fruiting specimen, weathered, faded and fragmentary. 
7. GRACILARIA sp. 
Off Cape Wadsworth, Coulman Island. 
A fragment without fruit. The habit is that of G. multipartita, and a transverse 
section of the thallus shows the large thick-walled inner cells, surrounded by smaller 
ones. 
8. GRACILARIA SIMPLEX. 
G. simplex, Gepp, Journal of Botany, 1905, p. 195. 
Leptosarca simplex nob. op. cit. 1905, pp. 108, 162. 
Frondes plures (8-10) e callo minuto orte simplices oblong vel lato-cuneatz 
plane membranace, 10-15 cm. long (apice destructo), 3-8 cm. late, ¢c. 230. 
VOL. II. 2M 
