Eu-Florideae, CorallinaceiB, Dennatolitlion. 1771 



Species tantum nomine nota. 



18 Melobesia polycarpa Zanard. Saggio (184:5) p. 44, ii. 86 (nomen). -^^^ 

 llab. ad lapidcs in iuari Adriatico (Zaxaiidinij. — Conceptanula 

 numerosa, valde stipata. 



Species a genere removenda. 



19. MelobesJa paclfica Heydr. Lithoth. AIus. Par. (1901) p. :m. Sec. 

 Foslie Den bot. Samling 1902 est Mastophorn' species, An potiiis 

 est hrec species Squamariaceis adscribenda? 



DERMATOLITHON Fosl. [1900] Revis. Syst. Surv. of Melob. p. 21 (Etym. 

 (Jerma cutis et lithos lapis), Melobesiw, Lithophylli, Lithothamnii 

 sp. auct. nonnull. — Frons ut in genere Melobesia. Conceptacula 

 sporangifera subimmersa, hemisphaerico-conica, poro apicali in- 

 structa, sporangiis pedicello brevi fultis e disco basali planiusculo 

 inter paraphyses liberas clav;i3formes exsurgentibus. Conceptacula 

 carposporifera subimmersa, hemisphairico-conica, poro apicali per- 

 tusa; carposporae paraphysibus concomitat?e. 



Obs. Genus hoc, ut mihi videtur, potius merum subgenus Me- 

 lobesioi sistit '). 



1. Dermatolithon pustulatum (Lamour.) Fosl. Rev. Syst. Surv. of Melob. 2850 

 (1900) p. 21, Melobesia piistulata Lamour. Polyp. flex. p. 315, 

 t. 12, f. c, B, Kuetz. Spec. p. 696, Tab. Phyc. XIX, t. 94, f. a-b, 

 Harv. Ner. austral. p. 110, Aresch. in J. Ag. Sp. H, p. 513, Heydr. 

 Corall. insbes. Melob. (1897) p. 45, Rosan. Rech. Melob. p. 72, 

 t. 4, f. 2-8, Hauck Meeresalgen p. 265, f. 109, Ardiss. Phyc. Medit. 

 I, p. 446, Melobesia verrucata Lamour. Polyp. flex. p. 316 partim, 

 Crouan Fl. Finist. p. 150 (in Fuco) non alior. auctor. — Fronde 

 tota pagina inferiori adnata, dein crassa convexo-pulvinata, sub- 

 orbiculari, imbricata, denique confluenti; cystocarpiis conspicuis, 

 per totam fere frondem sparsis. 



Hab. Florideis aliisque Algis insidens, in oceano Atlantico 



') Hanc opinionem .secutus, genus Deriiiatolithon in conspectu generum ad 

 p. 1719 a Melobesia haud distinxi; sed characteres Melobesice emendandi sunt 

 60 magis quod nonnulIi« species thallum pluristromaticum prsebent. 



