Eu-Floririei3e, OorallinafiefP, Lithotliamnion. 175B 



crassis ; ronceptaculis sporangiforis convexis, subproininentibus, 

 haud acute definitis. 



Ilah. ad oras insularuni r)(>rnmdensiuni (1^'arlow). — Frons 

 usquo ad cni. diaui. a'(iu;iris. Cellulie perithallicje subciuadratica' 

 aut subrotundat^e, 4-7 (i-. diaui. Conceptacula sporangilera ;i50-(i00 [x. 

 diam. metientia, totam frondem (marginibus exceptis) occupantia 

 plus minus conferta, tegmine canalibus sparsis intersecto, sporan- 

 giis 100-140 «60 [i. 



67. Llthothamnion syntrophicum Fosl. New Melobesiea' (li)Ol) p. 6. — 279] 

 h'ronde crustieformi vcl lam(dIosii, lamellis novis repetito super- 

 positis, irregulariter adhaerente, tenui, demum nodulos parvos et 

 irregulares forniante; conceptaculis sporangiferis convexis subpro- 

 minentibus. 



Hab. ad corpora marina varia ex oris insularum Bermuden- 

 sium (Farlow). — Frons 200-800 [x. crassa, 2-3 cin. diam. Celluh^ 

 regionis hypothallicjB 12-1') « 6-9, perithallicas 1-7 [i. diam. Con- 

 ceptacula sporangifera 400-600 [x. diam. metientia, haud acute de- 

 finita, centro leniter deplanata, sporangiis zonatim 4-divisis, more 

 120 « 60 [x. 



68. Lithothamnion fumigatum Fosl. New Melobesise (1901) p. 7. — ^"^^- 

 Fronde crustEeformi, ambitu indeterminata, excrescentiis confertis 

 parvis verruc;eformibus instructa; conceptaculis sporangiferis le- 

 viter prominentibus, centro frequenter depressis. 



Hab. ad conchas ad littus Victoria? (J. Gabriel). — Crusta 

 circ. 4 mm. crassa, superficie insequali, verrucis 1-2 cm. diam., 

 metientibus. Cellulie hypothallicae regionis more 22 ^ 6 \i., perithal- 

 licai 12=^^4-7. Conceptacula sporangifera 250-300 [x. diam. a^quantia, 

 tegmine canalibus fere 20 intersecto, sporangiis bipartitis, 80-100 » 

 30-50. 



69. Lithothamnion siamense Fosl. Corall. Koh Chang(1901) p. 19. — 2793 

 Crusta tenuissim;i, levi, roseola, adfixa; conceptaculis sporangiferis 

 convexis, prominentibus, carposporiferis conicis. 



Hal). in Coralliis, lapidibus, conchis algisque calcareis iii 

 regione Siamensi. — Crusta; 30-100 [x. crassfe, in sicco roseolae et 

 in griseo-viridulum vergentes, primitus orbiculares, hinc inde mar- 

 gine leniter crenuIaUe, dein setate provectiori ambitu irregulares, 

 ob pluriuni crustarum confluentiam indeterminatas et tunc crustam 

 singulam usque 12 mm. diam. ffiquantem efficientes, vetusta; super- 

 ficie paullum iuEequales. CelluLe regionis hypothallicse ad 25 \x. 

 long.e, perithallicse 7-10 [Ji. diam., rarius ultra. Conceptacula spo- 



