Eii-Floridese, Corallinaoege, Archseolithotliamnion. 1721 



Antheridia in conceptaculis fructiferis siinilibus locata, e filis pa- 

 rietalibus tenuissiniis constituta. 



1. Choreonema Thureti (Born.) Schmitz Syst. Uebers. Florid. p. 21, 2698 

 Mngl. & Prantl Natiirl. Pflanzenfani. (1897) p. 541, f. 288^1, ButThani 

 On Antheridia (1893) pag. 299-300, Melobesia Tlmreti Born. in 

 Tiiur. Et. Phyc. pag. 96, tab. HO, fig. 1-8, Solnis Laubach Corall. 

 p. 12, t. III, f. 1,4-10, Hauck Meeresalgen p. 261, f. 105, En<lo- 

 siphonia Thureti Ardiss. Phyc. Medit. (1883) p. 451. 



Hdb. in frondibus Oorallinarum in oceano Atlantico et mari 

 Mediterraneo et Adriatico; eadem (sec. Thuret) in Corallinis in 

 oceano Australi ; in mari Japonico ad «Misaki» (Yendo). -- Harvey 

 hanc speciem prima vice in Phyc. Brit. t. 201, in Corallina squa- 

 mata illustravit, at autonomiam ejusdem haud recognovit, meram 

 fructiflcationem Corallince nunc memorata^ judicans. 



CH>ETOLITHON Fosl. [1898] List of sp. of Lithoth. p. 7, Rev. Syst. 

 Surv. of Melob. (1900) p. 15 (Etym. chcete seta, coma et lithos lapis), 

 Lithothamnion subgen. Lithonema Fosl. Syst. Surv. of the Lithoth. 

 (1898) p. 1, Melobesice sp. Solms-Laubach. — Frons parasitica, 

 cellulis hypothalli rhizoidarum ad instar intra contextum algarum 

 matricalium (Corallinarum) penetrantibus. Conceptacula spo- 

 rangiorum soriformia, subimmersa. Cystocarpia adhuc ignota. 



1. ChaBtolithon deformans (Solms) Fosl. List of Lithoth. p. 7, Melobesia -^99 

 d,e/brmans Solms Corall. p. 57, t. I. f. 5, t. III, f, 12. 



/Ta/^. in apicibus frondium Corallina? natalensis, quos de- 

 format (Solms-Laubach). — Apices Corallince a Choreonemate 

 deformantur ita ut brevearticulati coralliiformes quoquoversum irre- 

 gulariter ramosi evadant. 



ARCH/EOLITHOTHAMNION Rothpl. [1891] Fossile Kalkalgen p. 295 

 (Etym. archaios antiquus et Lithothamnion, gen. Corallinacea- 

 rum), Fosl. Rev. Syst. Surv. of the MelobesisB (1900) p. 8, Litho- 

 thamnii sp. auct. — Frons lithothamnioidea h. e. inarticulata, 

 calce incrustata. Sporangia e cylindraceo-reniformia rotundato- 

 ovata, indivisa (aut cruciatim divisa?), in soros zonatos aut con- 

 ceptaculiformes, subimmersos aut superflciales, plus miims regu- 

 lares evoluta, singula apice elongato cum canali mucifero tegminis 

 congruentia et parietibus persistentibus aut demum evanescentibus 



