the Colony of Western Australia. 547 



Order IV.— COEALLINACE^. 



147. Amphiroa charoides, Lx. King George's Sound, Cape Kiche, and Eottnest, on rocks (9). 



148. Aup aiRO A intermedia, n. sp.; froude gracili (biunciali) fastigiata sub-tetrachotoma, ramulis 



stellatim patentibus verticillatis ; articulis cylindraceis basi et apice nodoso-incrassatis, 

 superioribus diaraetro 8-plo-longioribus; geniculis angustissimis; ceramidiis ad raraulos 

 secundis. On Caulinia stems, Eottnest (282). A much smaller plant than A. charoides; 

 and differing from A. stelligera in the shorter nodes, &o. 



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-pIo) longioribus; geniculis diametro 

 ajqualibus; 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 squalibus, inferioribus calcareo-granulosis, superioribus 

 cartilagineis nudis; ceramidiis ad ramulos secundis. On Caulinia at King George's Sound 

 and Eottnest, common (283). 



152. Kyiv^mox 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. CHEiLospORUM7)«fc/ieH«7n, n. sp. ; fronde pusilla brevi stipitata dichotoma flabelliformi fasti- 



giata ; articulis sagittatis medio costatis sape transversim rugulosis diametro sesquilongi- 

 oribus, lobis brevibus acutis erectis ; ceramidiis .... At Eottnest, parasitical on Alg(e 

 (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, &o. (53). 



158. Jania affinis, n. sp. ; fronde pusilla dichotoma, ramis ramulisque erectis strictiusculis; axillis 



acutis ; articulis omnibus cylindraceis diametro triple- longioribus ; ceramidiis parvis urns- 

 formibus. Eottnest ( ). The size of J', micrarthrodia, but with much longer joints and 

 more erect growth. It may be J. pacifica, Aresch. 



159. J.UJLi Cuvieri, Lx. Many varieties of this species abundant (3). 



1()9. Mastophor a /)/a!!a, Sond. Extremely common on rocks, Eottnest (50). 

 170. Mastophora Lamourouxii, Dn. King George's Sound and Cape Eiche ( ). 



VOL. XXII. 4 B 



