Stipes 1-2 inches long, cylindrical, consisting of a single cell. Above this stipes the filament is prolonged to
12 or 20 inches, prescvring the diameter of hog’s-bristle, and becoming excessively branched in a manner partly
trichotomous, partly dichotomous, and partly irregular. The braucJies are much bent, and often tangled together, and
repeatedly forked ; their penultimate segments are long and filiform, flexuous, and fuiTiished at the angles with a
tuft of short, densely crowded rajnuli. In some specimens the branches are bare of ramuli. The substance is
rigid aud crisp, not collapsing when removed from tlie water. The colour is a full grass-green,
2. Cladophora B a in e s ii (F. Muell. et Harv.) ; longiuscule stipitata, flavo-viridis, siccitate vitreo-
niteus, mollissima, filis basi setaceis mox capillaribus sursum maxime attenuatis elongatis di-trichotomis
ramosissimis, ramis trichotomo-multifidis ramulis lateralibus polyehotomis onustis, ramulis ultimis longe
filiformibus apice acutis mucronatis, articulis ramorum longissime cylindraceis diametro 20-30-pIo longioribus
ad genicula eonstrictis, ramulorum diametro 6-10-plo longioribus.—Earv. Alg. Exsic. n. 818-,
Phyc. Austr. /. 112.
H ab. Georgetown.
D i s t r ib . Port Phillip, Baines, JF. II. II., efc.
Stipes as in the last species, to which this is allied in several respects, but is a much more slender, softer,
and brighter-coloured plaut, attenuated at its extremities to an extreme fineness. Both belong to the section of
the European C. pellucida, and have nearly similar ramification. The present species gi-ows 6-12 inches long,
and closely adheres to paper in drying. It is veiy glossy iu a diied state.
3. Cladophora g r a c ilis (Griff, iu Wyatt’s Alg. Danm. n. 97 ; Harv. Man. ed. 1. p. 137 ; Harv.
Phyc. Brit. t. 18; Fl. N. Zeal. ii. p. 263).
H ab. Georgetown, Gunn.
D i s t r ib . Europe aud New Zealand.
4. Cladophora grac illima (Harv.) ; cæspitosa, flavo-viridis, mollissima, siccitate sericea, filis 6-12-
uncialibus tenuissimis decomposito-ramosissimis, ramis ramulisque repetite alternis v. secundis pluries
compositis, ramulis sæpe alterne secundis, articulis ramorum diametro 5-6-pIo longioribus, ramulorum
subbrevioribus, apicibus obtusis.—Earv. Alg. Exsic. n. 588.
H ab. Georgetown, JF. II. E .
Allied to C. gracilis, but much more slender, softer, and more silky.
5. Cladophora fe rruginea (Harv.) ; cæspite (ferrugineo) brevi unciali globoso v. stellatim patente
fastigiato spongioso, filis intertextis radicantibus parum ramosis, ramis ramulisque erectis strictis, articulis
diametro 3-4-plo longioribus.
H ab. On Hormosira Banksii, at Safety Cove, Port Arthur, W. II. II.
This has the habit of C. uncialis, to which it is nearly allied. All our specimens are stained, apparently with
ferruginous matter, so that tiD placed under a lens they may be taken to belong to au Ectocarpus.
6 . Cladophora S tu a rtii (Harv.) ; filis capillaribus tenuibus rigidiusculis siccitate eleganter
variegatis e basi ramosis, ramis longissimis filiformibus indivisis simplicibus vel ramos secundarios
similes emittentibus, ramulis brevibus patentibus sparsis alternis secundisve, articulis ad genicula contractis
ramorum diametro triplo ramulorum subduplo longioribus.
H ab. Tasmania, C. Stuart.
Tufts 4-6 inches long, pale-green. Filaments divided near the base into many long, simple or subsimple,
thread-like branches, which are more or less beset witli short patent ramuli of five or six joints. Sometimes the
branches are quite simple ; sometimes the larger branches bear a second series of similar ones. When dried, the
plant imperfectly adheres to paper, and is elegantly variegated with green and white wheu viewed with a pocketlens.
This appearance is caused by the dispersion of the endoclirome towards the dissepiments i
drying. The articulations are very uniform in all parts of the filament, those of the p
the process of
f thrice
a long as broad, of the ramuli shorter. The endochrome does not recover its form on moistening after having
).—Conf. clavata, var. Darwinii,
Gen. CXVI. CONFERVA, Ag.
1. Conferva (Chaetomorpha) Darwinii (Kiitz. Sp. Alg. p. 38
Hook. fll. et Harv. Fl. Ant. ii. p . 493. t. 192. / . 1. (T a b . CXCVI. C.)
H a b . On Algce and rock-pools.
D istrib. Common on the shores of Australia and New Zealand.
P late CXCVI. C. Fig. 1, plant, nat. size ; 2, terminal articulations, magnified.
2. Conferva coUformis (Mont. Voy. PÒI. Sud, p. 5).—Chætomorpha coliformis, Kütz. Sp. Alg.
p . 380 ; Tah. Phyc. t. 62. / . 2.
H a b . Southport, C. Stuart.
3. Conferva valida (Hook. fil. et Harv. in Lond. Journ. vi. p. 4 1 6 ; Kiitz. Sp. Alg. p. 379).
H a b . Georgetown, etc., common.
We have received specimens of several fresh-water Confervoe from Mr. Gunn ; unfortunately not in a state fit
for examination and description.
Gen. CXVII. TYNDARIDEA, Bory.
1. Tyndaridea cm c ia ta (Harv, Man. Br. Alg. p. 141 ?).—Zygnema cruciatum, Ag. Syst. p . 11 ;
Kütz. Sp. Alg. p . 445. T. cruciata? and T. latescens, Hassall?
H a b . In the South Esk River, Gunn.
Wc have also a specimen of another species of this genus, and more than one of Zygnema [Spirogyra), which
we cannot determine ft'om dried specimens.
T r ibe IV. ULFACEyE.
Gcu. CXVIII. POEPHYRA, Ag.
(Ag. Syst. xxxii. Endl. 3rd Snppl. p. 19. Harv. Phyc. Brit. t. 92, t. 211. Kütz. Sp. p. 691.)
1. Porphyra lacin iata (Ag. Syst. p. 190 ; Ag. Ic. Eur. t. 26, 27 ; Harv. Phyc. Brit. t. 92 ; Kiitz. '
Sp. Alg. p. 692).
H a b . Rocky seacoasts. Geuerally diffused.
Oen. CXIX. ENTEEOMOEPHA, Link.
(Link in Hov. Phys. p. 5. Harv. Phyc. Brit.—Solenia, Ag. Syst. xxxii.)
1. Enteromorpha compressa (Grev. Alg. Brit. p. 180. t. 18; Harv. Phyc. Brit. t. 335 ; Kütz.
Sp. Alg. p. 480).
H a b . Seashores and tidal rivers, everywhere. Also on woodwork and ships’ bottoms. Generally
diffused.
2. Enteromorpha inte stin a lis (Link, Hor. Phys. p. 5 ; Grev. Alg. Brit. p. 179; E. Bot. Suppl.
t. 2756; Ilarv. Phyc. Brit. t. 154).
H a b . In similar places to the preceding; often in ditches of brackish water. Generally diffused.
VOL. I I . 4 g
i