551 
the Colony of Western Australia. 
is a true Gracilaria, but requires to be compared with Sender’s, which is said to be te?'ete, 
while mine is strongly compressed. 
202. Geacilaria fruticosa, n. sp. ; fronde rubro-coccinea sicoitate fusoescente compressa quoquo- 
versum ramosa; ramis crebris patentissimis bis terve divisis; ramulis alternis v. secundis 
vage spinoso-armatis acutis; coccidiis . . . Fremantle, rare (179). Nearly allied to G. armata, 
but of softer substance, and compressed. The peripheric cells are in a single row. 
203. Gracilaria sp. . . . King George’s Sound (95). Not in fruit. I have not been able to deter- 
mine this species satisfactorily. 
Order VI.— SQUAMAEIE^. 
204. Peyssonelia Grev.? Eottnest, a solitary specimen (316). If not the same as the 
Mediterranean plant, it is very nearly allied to it. 
205. Cruoeia? australis, n. sp. ; fronde pusilla ovali rosea, fills verticallibus simplicibus, articulis 
diametro subduplo-longioribus, cystocarpiis e basi frondis erectis magnis oblongis. Para- 
sitical on Amphiroa australis, at Eottnest (317). I am doubtful of the genus, not having 
found tetraspores on many specimens examined. The filaments most resemble those of a 
Cruoria or Petrocelis; but the habit is that of an Actinococcus. The cystocarps in my plant 
are oblong, consisting of dichotomous strings of spores, either whorled round a vertical 
axis, or proceeding from a central point. 
Order VII GELIDIACEiE. 
206. Gelidium corneum. Lx. King George’s Sound, not common (43). Some of the very dwarf 
varieties are frequent, near high-water mark, on all the rocky shores. Near Arthur’s Head, 
Fremantle, grows abundance of what I suppose to be Acrocarpus ramellosus of PL Preiss. 
One or two specimens of a dichotomous Gelidium, resembling G. variahile, were gathered at 
Eottnest. 
207. Gelidium proliferum, n. sp. ; fronde inferne semiterete crassissima, superne compresso-plana 
V. applanata decomposite pinnata et prolifera, setis minutis demum foliaceis densissime 
muricata ; pinnis pinnulisque lato-linearibus planis, pinnulis erecto-patentibus ; cystocarpiis 
bilocularibus in processis filiformibus simplicibus v. pinnatis e pinnulis emissis immersis. 
Fremantle, thrown up after storms (244). A very distinct species, much the largest of 
the genus. I have long possessed imperfect specimens collected by Alessrs. Alylne and 
Backhouse. 
208. Pteeocladia lucida, J, Ag. King George’s Sound and Eottnest (44). The King George’s 
Sound specimens agree closely with those from New Zealand. The Eottnest plant may 
possibly belong to a new species, but requires very careful examination. 
209. Eucheuma speciosum, J. Ag. Fremantle and Eottnest (232). The Jelly or Blanc-mange weed 
of the colonists. 
