408 . ALGÆ TASMANICÆ. 
densioribus reticulatim anastomosantibus intricatis con- 
stituta, peripheriam versus in fila brevissima moniliformia 
desinentibus.  Tefraspore zonatim partite, inter fila peri- 
pherica nidulantes, per frondem dispersee.—Alge Austra- 
lasicæ, fusco-rubescentes, membranacee, decomposite ra- 
mose ; ramis pluries alterne divisis. 
67. Mychodea carnosa, nobis; fronde carnosa flacca ramo- 
sissima, ramis horizontalibus flexuosis crassis pluries 
divisis, minoribus setaceis filiformibus acutis, ramulis 
paucis subulatis; lacunarum parietibus crassis. 
Has. Tasmania, Mr. Gunn. 
77. Mychodea membranacea, nobis; fronde membranacea 
elata ramosissima’ ramis patentibus sensim attenuatis 
pluries divisis minoribus subdichotomis, axillis rotundatis, 
ramulis elongatis attenuatis acuminatis; lacunarum parle- 
tibus tenuibus. 
Has. George Town, Mr, Gunn.—Greatly resembling the 
former in general habit, but here the walls of the in 
cavities or lacune are membranaceous and thin, though — 
the membrane is traversed by filaments. In M. carnose —— 
they are much more gelatinous, very thick, supported by? - 
large network of filaments. 
Ruasponia, Nov. Gen. at 
Frons membranacea, filiformis, ramosissima, e filis longitudi- 
nalibus intertextis ramosis anastomosantibus frondem per- s 
currentibus extus in strato cellulari peripherico desinentibus 
formata; cellule periphericæ interiores magne unrp^" — 
 Seriate, exteriores coloratæ minores, uniseriatæ. Tuer : 
spore oblongæ, zonatim partite, inter cellulas exteriore? 
nidulantes.—Alge Australasicæ, graciles, purpureæ, plur 
~ alterne ramosa; ramis virgatis. (ee 
78. Rhabdonia coccinea, Harv.; fronde purpurea demum z 
coccinea ultra setacea decomposite ramosa pyramidali 
ovatove, ramis virgatis iterum divisis erecto-patentibus 
ramulis erectis basi angustatis acutis.—Chrysimenia 006 
cinea, Harv. l. c. p — zr re 
