the Colony of Western Australia. 
547 
Order IV COEALLINACE^. 
147. Amphiroa charoides, Lx. King George’s Sound, Cape Riche, and Eottnest, on rocks (9). 
148. Amphiroa intermedia, n. sp. ; fronde gracili (biunciali) fastigiata sub-tetrachotoma, ramulis 
stellatim patentibus verticillatis ; articulis cylindraceis basi et apice nodoso-incrassatis, 
superioribus diametro 8-plo-longioribus ; geniculis angustissimis ; ceramidiis ad ramulos 
secundis. On Caulinia stems, Eottnest (282). A much smaller plant than A. charoides; 
and differing from A. stelligera in the shorter nodes, &c. 
149. Amphiroa stelligera, Dne. On Caulinia, King George’s Sound, and Eottnest, common (4). 
150. Amphiroa gracilis, n. sp. ; fronde lapidescente di-tri-chotoma fastigiata; articulis cylindraceis 
basi et apice truncatis diametro multoties (10-14-plo) longioribus; geniculis diametro 
lequalibus; ceramidiis numerosissimis quoquoversis. King George’s Sound and Eottnest, 
common (218). 
151. Amphiroa granifera, n. sp, ; fronde lapidescente di-tri-chotoma fastigiata; articulis cylindra- 
ceis, inferioribus basi et apice nodoso-incrassatis, superioribus simplicibus diametro 6-8-plo- 
longioribus; geniculis diametro aaqualibus, inferioribus calcareo-granulosis, superioribus 
cartilagineis nudis; ceramidiis ad ramulos secundis. On Caulinia at King George’s Sound 
and Eottnest, common (283). 
1 52. Amphiroa Ephedra, Lx. Fremantle, G. Clifton, Esq. (289). 
153. Amphiroa anceps, Lx. Eottnest, not common (281). 
154. Amphiroa australis, Sond. In dark hollows of the reefs, Eottnest (217). 
155. Amphiroa sp. . . . Eottnest, growing with A. australis, to which it is allied (219). The 
specimen retained for description has become broken in travelling, and I therefore leave 
this plant undescribed for the present. 
156. Cbv.\.\.obvo\i\su pulchellum, n. sp. ; fronde pusilla brevi stipitata dichotoma flabelliformi fasti- 
giata; articulis sagittatis medio costatis saipe transversim rugulosis diametro sesquilongi- 
oribus, lobis brevibus acutis erectis; ceramidiis .... At Eottnest, parasitical on Algce 
(250). A much smaller and more delicate plant than C- sagittatum, and differing from that 
and C. cultratum, to which it is more nearly allied, in the erect, not patent, and shorter lobes 
of the articulations. 
157. Jania micrarthrodia. Lx. Common on Caulinia and Algce, &c. (53). 
158. Jania affinis, n. sp. ; fronde pusilla dichotoma, ramis ramulisque erectis strictiusculis ; axillis 
acutis ; articulis omnibus cylindraceis diametro triplo-longioribus ; ceramidiis parvis urnie- 
formibus. Eottnest ( ). The size of J. micrarthrodia, but with much longer joints and 
more erect growth. It may be J. pacifica, Aresch. 
159. Jania Cuvieri, Lx. Many varieties of this species abundant (3). 
169. Mastophora ^I’awa, Sond. Extremely common on rocks, Eottnest (50). 
170. Mastophora LainowroM^M, Dn. King George’s Sound and Cape Eiche ( ). 
4 B 
VOL. XXII. 
