Alga, by W. H. Harvey.] FLORA OF TASMANIA. 283 
Haz. Georgetown, R. Gunn. 
DisrRiB. Southern shores of Australia. 
Gen. II. SEIROCOCCUS, Grev. 
(Grev. Alg. Brit. Syn. p. 34; Endl. 3rd Suppl. p. 33; J. Ag. Sp. Alg. i. p. 260.) 
l. Seirococcus axillaris (Grev.; J. Ag. l. c. p. 260).—Fucus axillaris, Zurn. Hist. f. 146. 
Has. Georgetown, Gunn, W. H. H., etc. 
DisrRrB. South coast of Australia: not found west of Cape Northumberland ? 
Gen. III. SCYTOTHALIA, Grev. 
(Grev. Syn. p. 34; Endl. 3rd Suppl. p. 33; J. Ag. Sp. Alg. i. p. 257.) 
1. Scytothalia dorycarpa (Grev.; J. Ag. Sp. Alg. i. p. 258).—Fucus dorycarpus, Turn. Hist. t. 143. 
Haz. “ Van Diemen's Land,” R. Brown, fide J. Ag. 
We have not seen any Tasmanian specimens, and suspect a mistake in the habitat. This plant is very abun- 
dant in Western Australia, but is not found, to our knowledge, to the east of Cape Northumberland. 
Gen. IY. PHYLLOSPORA, 4g. 
(Ag. Revis. Macrocyst. p. 311; Endl. 3rd Suppl. p. 32; J. Ag. Sp. Alg. i. p. 252.) 
1. Phyllospora comosa (Ag. l.c. t. 28. f. 11; J. Ag. Sp. Alg. i. p. 253).—Fucus comosus, 
Turn. Hist. t. 142; Labill. Pl. Nov. Holl. t. 258. 
Has. Common on the seacoast. 
DisrRrB. South coasts of New Holland. New Zealand. 
Gen. V. SCABERIA, Grev. 
(Grev. Syn. p. 36; J. Ag. Sp. Alg. i. p. 251.—Castraltia, Ach. Rich. Fl. N. Zeal. xi. p. 143; Dne. Arch. 
Mus. xi. p. 175. t. 5. f. 23, 24; Endl. 3rd Suppl. p. 30.) 
A. Rich. N. 
l. Scaberia Agardhii (Grev.; J. Ag. Sp. Alg. l.c. p. 252).— Castraltia salicornoides, 
 Zeal. xi. p. 143. 
Has. Georgetown, etc., R. Gunn. 
Disrrrs, Western and southern shores of Australia. New Zealand. 
By an oversight, this plant is omitted in Hook. Fl. N. Zeal. 
Gen. VI. CYSTOPHORA, J. 4g. 
Hook. Fl. N. Zeal. ii. p. 914.— Blossevillea, Dne. in Arch. Mus. xi. 
fil. et Harv. in Lond. Journ. vi. p. 414.) 
Fl. N. Zeal. ii. p. 214).— Blossevillea 
(J. Ag. Symb. p. 3; Sp. Alg. i. p. 238; 
(not of Labill.). 
p. 147; Hook. 
E Cystophora monilifera (J. Ag. Sp. Alg. i. p- 241; 
retroflexa, Dne. ; Harv. in Lond. Journ. vi. p. 414. Fucus retroflexus, Turn. Hist. t. 155 
Has. Georgetown, etc., R. Gunn. 
Disrris. Western and southern coasts of New Holland. New Zealand. 
260; J. Ag. Sp. Alg. i. p. 242).— 
2. Cystophora retroflexa (Labill. Nov. Holl. p. 119. t. 
