1750 Eu-Florideae, Corallinacefe, Lithothamnion. 



Hab. ad « Cape Jatfa » Australiae moridionalis (A.. Engelha.kt). 

 — Conceptacala sporangifera 250-300 [j.. diain. inetientia, tegmine 

 canalibus delicatis circ. 25 intersecto, sporangiis zonatim 4-divisis, 

 80-90^25-30. Haec speeies similitudinem quandam p riebet L^Y/iO- 

 thamnio Muelleri Lenorm. 

 58 Lithothamnion kerguelenum (Dick.) F^osl. Some new or crit. Lith. 

 p. 10 (excl. f. obtectida), Calc. Alg. from Fuegia (1900) p. 67, 

 Melobesia herguelena Dicl^:. in Journ. Linn. Soc, Bot., vol. 51 

 (1876) p. 200 et Trans. R. Soc. Lond. vol. 168 (1879) p. 58. — 

 Crusta concentrice striata, in parte crassiore usque 2 mm. crassa, 

 dein versus margines sensim sensimque subtiliore, superficie sub- 

 inaequali, demum crusta nova superposita; conceptaculis sporangi- 

 feris convexis, subprominentibus, centro tegminis paullum depresso. 



Hab. ad littora insularum Kerguelensium, forsan Florideis 

 filamentosis insidens (Eaton) ; in radicibus (M a c r o c y s t i d i s ?j ad 

 insulam Desolationis Fuegiae (P. Dusen). — Crustse 7 cm. et ultra 

 latcB. Conceptacula sporangifera circ. 500-600 [j.. diam. sequantia, 

 teginine canalibus subtilibus numerosis intersecto. 



59. LJthothamnion capense (Hohen.) Fosl. List. of Lithoth. (1898; p. 7, 

 Rev. Syst. Surv. of Melob. (1900) q. 14. Heydr. Lithoth. Mus. 

 Paris (1901) p. 544! LitJiophyltum crtpcnse Hohen. Alg. mar. 

 n. 236. — Fronde eramosa, oblonga; conceptaculis sporangiferis 

 et carposporiferis minutis. 



Hab. in frondibus Gelidii cartilaginei ad Caput Bonse 

 Spei Africie australis (Hohenacker). — Conceptacula utriusque ge- 

 neris 800 {a. diam. metientia. Cfr. ceterum differentiales notas 

 inter hanc et species affines in Heydrich loc. cit. p. 543. Adest 

 f. Ecklonim Fosl. in Vid. Selsk. Aarsber. f. 1901. 



60. Lithothamnion Muelleri Lenorm. in Rosanofif Rech. anat. Melob. 

 (1866) p. 101, t. 6, f. 8-11, Heydr. Melobesia^ (1897) p. 413 (nomen), 

 Lith. Mus. Paris (1901j p. 544, Fosl. Syst. Surv. of Melob. (1900) 

 p. 14. — Fronde fucicola, matricem involvente, crusUeformi, ra- 

 mulis cylindraceis aut applanatis apice truncatis irregulariter dis- 

 positis instructa; conceptaculis promineiitibus, per frondem confer- 

 tiusculis, demum subimmersis, cystocarpiferis et sporangiferis in 

 eadem fronde provenientibus. 



Hab. in Algis ex Australia provenientibus (Herb. Lenormand) 

 ad « Lyalls Bay » Australiae (Filhol, Heydrioh). — Sporangia (sec. 

 Rosanoff) obovata et septis transversis in 8 loculos divisa (an po- 

 tius carposporaj seriatim evolutie?). Tetrasporangia minuta, piri- 



