the Colony of Western Australia. 
537 
• Series II.— RHODOSPERME^. 
Order I.— EHODOMELACE^. 
43. Claudea elegans, Ag. Fremantle, very rare, June, Geo. Clifton, Esq. (276). 
44. Maetensia elegans. Her. M. Brunonis, Harv. MS. Garden Island and Rottnest, rare, May 
and June. My specimens seem identical with the South African ones (170). 
45. Maetensia denticulata, n. sp.; frondibus sessilibus casspitosis tenui-membranaceis repetite di- 
chotomis, laciniis cuneatis ultimis non raro flabelliformibus ; margine crispato denticulate; 
fenestro apice ciliato v. lobato, lobulis demum elongatis fenestratisque. Species valde vari- 
abilis. Garden Island and Rottnest, on reefs near low-water mark, June (171). 
46. Maetensia Australis, n. sp. ; stipite cartilagineo brevi in frondem multilobatam membranaceam 
basi incrassatam desinente, margine hie illic minutissime denticulate ; fenestro apice angustis- 
sime marginato denticulate. King George’s Sound, rare, February (88). 
47. Thdeetia quercifolia, Dne. King George’s Sound and Garden Island (65). 
48. Saecomenia delesserioides. Send. Garden Island and Fremantle (130). Three varieties occur 
together, viz.: a. latifolia, phjdlodiis lato-lanoeolatis; /3. lancifolia, phyilodiis lineari-lanceo- 
latis; 7. cirrhosa, phyilodiis angustissimis, supremis siepius cirrhiferis. The plant described 
by me in Ner. Austr. as S. delesserioides is a Delesseria, namely, D. corifolia, H. I have now 
gathered Sender’s plant in abundance. 
49. Saecomenia hypneoides, n. sp. ; fronde lineari angustissima compressa distiche ramosissima, 
ramis ramulisque oppositis attenuatis acutis basi nec angustatis ; stichidiis lanceolatis spar- 
sis V. fasciculatis. Garden Island and Fremantle. Certainly a congener with the preceding, 
to which it bears precisely the same relation that Desmarestia viridis does to D. ligulata. 
Both this and the preceding species are gray and iridescent when living, but turn a bril- 
liant rosy red after a few minutes’ exposure to the air, and this colour is preserved in drying 
(276). 
50. Lenoemandia Sond. Garden Island, abundant; rare at Rottnest (113). L. latifolia. 
Harv. Ner. Austr. is only a broad-leaved variety. This plant varies extremely in size. 
51. Jeanneeettia frondosa, n. sp. ; caule dichotomo cartilagineo alato v. denudato ; phyilodiis cune- 
atis dichotomis crispatis, costa infra medium laminae evanescente; fasciculis stichidiorum 
sparsis. Garden Island, rare (112). This plant is intermediate in character between Jean- 
nerettia and Pollexfenia. 
52. Pollexfenia pedicellata, Harv. Ner. Austr., t. 5. King George’s Sound, Garden Island, and 
Rottnest, common (33). /3. multipartita; fronde angustiore, regulariter dichotoma (100). 
P. multipartita, Harv. in Herb. T. C. D. Having collected both these forms in abundance, 
I am forced to unite them under one specific name. 
53. PoLYPHACUM proliferum, Ag. King George’s Sound and Fremantle (89). 
54. Thamnoclonium lU'ofiyerMm, Sond. King George’s Sound, cast ashore (318). 
55. Thamnoclonium flahelliforme, Sond. Fremantle, in fragments only (319). 
