14 



Hab. in raari mcdilerraneo, frondcs Zonariae sqnamariae 

 pcrroptans; ad Cette Tpsel ex Genua misit Martens] 



Frons rosca vix pollicaris, arctc adglutinata, a ccntro 

 orbicnlatim expansa; ramlficatlone inter pinnatam et dichoto- 

 mani iutcrmedia. Scgmeuta evidenter costata, semilineam clr- 

 citer lata. Rliodomeniae cristatae forsaii proxime collocanda, 

 licet Costa a Rhodomeniis recedit. 



Rhodojncnia corticata nov. sji. fronde plana lineari 

 irregnlariter dichotomo-pinnata, scgmentls sensim angnstio- 

 rlbus, ultimis acuminatis, coccidiis apiciilatis in fronde ses- 

 silibus. 



Hab. in mari Cejlonara allneutc, Reynaud,\ (Mus. Paris.) 



Frons 3 — 4-pollicaris , rix lincam lata, quasi crusta 

 obdiicta, dichotoraa ramulisqne brevioribus irregulariter pin- 

 nata, segmentis supremis elongatis acuminatis. Coccidia in 

 media fronde sessilia magna. Color hepaticus; substantia 

 rigidiuscula. 



Rhodomenia Juergcnsii nov. sp. fronde plana lineari 

 decomposite disticlie pinnata, pinnis majoribus minoribnsque 

 irregulariter alteruis, pinnulis basi cximie angustatis cu- 

 neato-linearlbus apice Serratia incisisre. 



Hab, in raari Kamtschatkam alluente; sp. mis. Jucrgens.l 



Frons purpiireo-rosea, membranacea, 3 — 4- pollicaris 

 lincam vix lata, inferne subdichotoma, superne pinnis ma- 

 joribus minoriljusqoe irregulariter interspersis decomposite- 

 piunata. Pinnae pinnnlaeque conformes, minores basi exiraie 

 angustatac, secundum aetatem vel pinneiiatae vel incisae vel 

 serratae. Sterilem tantum vidi. 



Rhodomema rostrata noh. fronde compressa subßli- 

 formi decomposite dicbotorao- pinnata, coccidiis hemisphaeri- 

 cis infra apicera subullformera bifidumve ramo incrassato ira- 

 mersis, sphaerospcrmiis iu apice ramulorum sparsis magnis. 



