Gen. XXXV. ECTOCARPUS, Lyngb.
(Lyngb. Hyd. Dan. p. 130. J. Ag. Sp. AJg. i. p. 14. Kütz. Sp. Alg. p. 449.)
1. Ectocarp us silicu lo su s (Lyngb.; J . Ag. Sp. Mg. i. p. 2 2 ; Kiitz. Sp. Alg. p. 451; Harv.
Phyc. Brit. t. 162).
H ab. Georgetown, etc.
D ist iu b . N o r th e rn an d so u th e rn tempe ra te zones.
2. Ectocarp us fa sc icu la tu s (Harv. Man. ed. 2. p. 5 9 ; Harv. Phyc. Brit. t. 273 ; Wyatt, Alg.
Damn. n. 3 0 2 ; Kütz. Sp. Alg. i. p. 22).
H a b . On Chorda lomentaria, at Georgetown, J. Penny.
Our specimens agree pretty nearly with specimens from the British seas, but are not fidly matm-ed. They are
liowever in fruit.
3. E cto ca rp us sordidus (Ila rv .); fronde decumbente debili abas algas investiente vage et parce
ramosa, ramis paucis flexuosis subsimplieibus nudisque hie ilUc ramulum horizoutalem brevem ferentibus.
H a b . Georgetown, covering small Algce, Gunn.
This resembles the British E. crinitus, to which it might without much violence be referred. It forms sprawling
strata, investing the smaller Alga, when growing in muddy places.
S e r ie s II . RHODOSPERMEÆ.
T r ib e I . RHOBOMELACEÆ.
Gen. XXXVI. CLAUDEA, Lamour.
(Lamour. An. Mus. xx. p. 121. Endl. 3rd Suppl. p. 50. Kütz. Sp. Alg. p. 887.)
1. Claudea e le g an s (Lamour. Ess. t. 2. f. 2, 4 ; Kiitz. Sp. Alg. p. 888 ; Harv. in Lond. Journ.
Bot. iii. p. 408. t. 20 ; Harv. Ner. Austr. 15 ; Phyc. Austr. t. 1).—Fucus Claudei, Turn. Hist. t. 243.
H a b . In the Tamar, above Georgetown, especially at Point Rapid.
D i s t r ib . Western Australia.
Gen. XXXVII. MARTENSIA, Her.
(Hering, Ann. Nat. Hist. viii. p. 92. Harv. Ner. Austr. p. 73. Kütz. Sp. Alg. p. i
1. Ma r ten sia , s
8.)
H a b . In the Tamar, at Georgetown, Gunn,
We regi-et that at present it is out of our power to determine this plant. Fragments of the fringe of a gigantic
Martetisia, much lai-ger and more robust than any we have elsewhere seen, have been sent to us by Mr. Gumi, and
similar fragments have been found by Mr. Feroday. No state of M. elegans that we have examined resembles these
fra"-ments, and they are still less like any of the other described species, except perhaps M. australis, Harv., from
Swan River. The fringe, when perfect, must have been more than 6 inches in breadth; the individual meshes are
nearly i inch long, the walls of the meshes more than a line in breadth; and the exterior margin of the network
timbriato-laciniate. Until the membranous portion of the frond, and especiaUy the base of the membrane, shall have
been seen, it wiU be impossible satisfactorily to determine the species.
Gen. XXXVIII. POLYPHACUM, Ag.
(Ag. Syst. p. 274. Endl. 3rd. Suppl. p. 33. Harv. Ner. Austr. p. 11 .— Epiglossum, Kütz. p. 878.)
1. Polyphacum Smithiae (Ilarv. Ner. Austr. p. 17. t. 3).—Epiglossum Smithii, Kütz. Sp. Alg.
p . 878.
IIab. Circular Head, Mrs. Smith.
D i s t r ib . South coast of Australia, W. H. H., F. Mueller, etc.
Gen. XXXIX. ? TIIAMNOCLONIUM, Kvlz.
(Kütz. Phyc. Gen. p. 392. Sp. Alg. p. 793.)
1. Thamnoclonium hirsutum (Kiitz. Sp. Alg. p. 793).—Polyphacum dichotomum, J. Ag.
H a b . At the mouth of the Tamar, in deep water.
D i s t r i b . Coast of New Holland.
Gen. XL. LENORMANDIA, Sond.
(Sond. Bot. Zeit. 1845, p. 54. Harv. Ner. Austr. p. 18. Kütz. Sp. Alg. p. 849.)
1. Lenormandia marginata (Hook. fil. et Harv. Ner. Austr. p. 19. t. 2 ; Kütz. Sp. Alg. p. 849).
Hab. Commou in the Tamar, at Georgetown.
Geu. XLI. JEANNERETTIA, Hooh. f il. et Earv.
(Harv. Ner. Austr. p. 20.)
1. J ean n ere ttia lobata (Harv. Ner. Austr. p. 20. t. 4).—Botryoglossum lobatum?, Kütz. Sp. Alg.
p . 881 ; Harv. Phyc. Austr. t. 33.
H a b . Port Mthur, Jeannerett. Iu the Tamar, R. Gunn, JF. H. H., etc.
D i s t r ib . West and Sonth Australia.
This plant scarcely diffei-s generically from the following, with which it sufficiently agrees in habit. By Kützing
it has been erroneously refeiTed to Botiyoglossnm, fi-om which it is widely separated by its fructification. The
ceramidia, with which we wei-e unacquainted when the genus was first described, resemble those of Pollexfenia
Gen. XL II. POLLEXEENIA, Earv.
(Harv. in Hook. Lond. Journ. Bot. iii. p. 431. Ner. Austr. p. 21.)
1. Po llex fen ia p ed ic ella ta (Harv. in Hook. Lond. Journ. Bot. iii. p. 431 ; Ner. Aust, p. 22-
t. 5 ; Kütz. Sp. Alg. p. 875).
H a b . Abundant at Georgetown, etc.
D i s t r ib . West and south shores of Australia.
The colour of the figure in Ner. Austr. is much too bright. It should be of a sober brownisb-ved, or pm-plish.
Gen. X L III. DICTYMENIA, Grev.
(Grev. Syn. p. 50. Endl. 3rd Suppl. p. 47. Harv. Ner. Austr. p. 28. Kutz. Sp. rUg. 847.)
1. Dictjnnenia Harveyana (Sond. in Linn. xxv. p. 697).—D. tridens, Harv. Ner. Austr. p . 28.
i. 1 {not o f Grev.).