the Colony of Western Australia. 5,57 



filaments, formed of very minute oblong, cells. The colour, when fresh, is a bright but 

 very fugacious, rosy pink. I have seen no fruit. ' 



259. Nemastoma? gelinarioide., n.sp.; fronde gelatinoso-carnosi rosea plana decomposito-pinnata 



pmms approx.matis erecto-patentibus pinnatis v. bipinnat.s, segmentis basi parum atte- 

 nuatis sublanceolatis acutis, ultimis lato-subulatis acutiusculis. King George's Sound, 

 rare (84). Very hke some of the more branching forms of Gdimria ulvoidea, but of much 

 o«« ^T "'°* structure. The structure is as dense as in Schkyraenia. 



260. Ne«astoma dar,u.cornis, n.sp.; fronde gelatinoso-carnosa extereti compresso-plana dichotomo- 



mult.fidasubfastig.ata; segmentis patentibus cuneatis, terminalibus filiformibus obtusis- 

 ax.ll.s omn.bus eximie rotundatis; tetrasporis sparsis cruciatim divisis. AtFremantleand 

 Eottnest, rare (.315). It requires to be compared with the Mediterranean N. dichotoma 

 which It closely resembles, and from which it may not be sufficiently distinct. 



Ordeb XII.— SPYEIDIACEjE. 



261. St^RiWAjilamentosa, H. Abundant all along the coast (18). 



Ohder XIII.—CERAMIACE^. 



262. CENxnocEHAs c^a..to„„, Ag. Common on littoral rocks and on Zostera, &c. (2). 



263. Ceramtm ruhrum, Ag. Eottnest and K.ng George's Sound, in wmter (258) 



'"Z;:;^::^;.""' ^--'^■---•' on ^..«, LL. and King 

 265. Ce,>am,cm isogonu,n, n. sp.; fronde pusilla (1-2 unciali) subsetacea dichotomfi fastigiata 

 segment.s erecto-patentibus terminalibus forcipatis; articulis corticatis omnibus diametr^ 

 .qualibus hnea hyalina centrali notatis medio parumque constrictis; favellis subtermTnaH 



S:^t:'^:L:z^;;:;^::-;rsr ^" ^^' -- -- ^-^ 



266 CEBAMxnM,„^«a...,Suhr.? C. FiUcula, Ear. M. S. ; file primario repente frondes minutas 

 semiunc.ales)sparsaserectasemittente; fronde compressa distich^ subpinna^liZs 

 clotomo fast.giat,s, segmentis terminalibus brevissimis dentiformibus, Lticuli ^0 

 brevioribus sacculo roseo coloratis, omnibus nisi supremis interstitii nudis, tet aTpoH 

 secus marginem segmentorum utrinque longitudinaliter seriatis. Parasitical onSZ 



(first found on the Peruvian Coast), although Agardh makes no mention of the primary 

 creeping filament, and there are some other slight differences in the description. ' 



267. Cam,™ australe, Sond. ! Garden Island, rare (285). Near C. I^eslon.cZ^^ 



268. CEn..nvM fasu,.atum, Harv. Parasit.cal on Zostera, Eottnest, rare (25^) 



j:;:;:;(2T"""'"' """" '"^'" °^ ^'^^ '" '''''-''''''• ^-^"^-^^'^ «°-^- 



270. Ptilocladia^w/c^to, Sond.! Garden Island, rare (147 and 148). 



4c 2 



