1770 Eu-Florideae, Corallinacei», Melobesia. 



- Crustis orbicularibiis, demiini in plagulas extensas contluentibus, 

 50-100 [t. crassis, purpureis; conceptaculis sporangiferis confertis, 

 convexis aut subconicis, 150-200 [i. diam. metientibus. 



Hab. in Florideis variis ex gr. Gymnogongro lineari, 

 Laurencia pinnatifida, Odonthalia dentata in oceano 

 Pacifico ad oras Californise (Setchell, Gardner). — Crustse e stra- 

 tis fere 9 composita^. Cellulae elongatse, 12 ^^ 5-8, corticales minores. 

 Sporangia zonatim 4-divisa, 50-60 « 25-30. 



15. Melobesia Cystosirae Hauck. Meeresalgen p. 266, t. III, f. 1,2, 6, "^^46 

 Fosl. Rev. Syst. Surv. of Melob. (1900) p. 21, Lithopliyllum Cysto- 

 sirce Heydr. Corall. insbes. Melob. (1897) pag. 47. — Crustis 

 quam maxime variis, roseis, tota pagina inferiore haud arcte ad- 

 natis, margine undulato non raro liberis ; cystocarpiis numerosis, 

 sffipe aggregatis, subhemisphsericis. 



Hab. in frondibus Cystoseira* et Peysson n elire Squa- 

 maria^ in mari Adriatico orientali. — Crustse 300-600 ^.. crassfe, 

 1-5 cm. latitudine expansie. Conceptacula 500-700 ji. diam., spo- 

 rangiis bipartitis. An, suadetite matrice (Peyssonnelia Squamaria), 

 hiic pertinet Melobesia opalina Zanard. Saggio (1843) p. 44, n. 84, 

 quantum scio, indescripta?. Sec. Foslie in litt. (1904) est forma 

 Lithophylli papillosi (Zan.) Fosl. , 



16. Meiobesia grandiuscula Mont. Fl. Alg. p. 138, Syll. crypt. n. 1526. 2^"^ | 

 — Fronde pallide purpurea, planiuscula, orbiculari, crassa, fragi- 

 lissima, unduhito-repanda, medio tantum affixa, verrucis vix con- 

 spicuis poro pertusis; conceptaculis frondi immersis, sporangia 

 oblonga zonatim 4-divisa foventibus. 



Hab. Florideis insidens in mari Mediterraneo apud «x\lger» 

 Africae borealis (Durieu). — An eadera species ac Melobesia fari- 

 nosa Lamour. ? 



17. Melobesia triplex Heydr. Quelq. nouv. Mel. du Mus. de Paris '^^48 

 (1902) p. 473. — Crustis minutis, 3-6 mm. diam., rotundatis, 

 paullum elevatis, lobulatis, tota pagina inferiori adfixis, margine 

 subrecurvo levi; conceptaculis poro singulo prominenti instructis, 

 120 [x. diam. metientibus. 



Hab. in fronde Neurymenite (Heydrich). — Margo thalli e 

 stratis tribus constat. Celluke strati medii 10 * 8, superioris et 

 inferioris rotundatse et 8 [i. diam. metientes. Crust:e 40 [x. crassie. 

 Tetrasporangia 70 ^ 30 |x. 



