373 Ea-FloiM(Jt'io, Solicricce, Euclicumn. 



— Frons 10-15 cm. alta, crassitie pcnnfe corvime, 3— l-pinnata, 

 pinnis sulKlisticliis, oppositis, elont^atis, 5-8 cm. longis, interjectis 

 spinis miiioribus. PapillaD 2-10 millim. longte, a basi latiore acu- 

 minatos subulatie, pinnarum longiores, caulinie breviores et dentes 

 serra3 haud male referentes. Color ct substantia Eiichematis spi- 

 nosi, a quo gra(4Iitate et regularitate ramificationis abludit. Stru- 

 ctura generis videtur; stratum medullare admodum angustum filis 

 constat nulla granulosa materia repletis; hinc quoque inter cellulas 

 magnas strati intermedii fila ejicurrentia vix conspiciuntur. 



D. Fronde e tereti compressa angusta et lineari, a inargine disticbe piiuiatn, 

 pinnis primariis spinulaeformibus aut conicis, singulis aut alternant,it)us 

 distantioribus et simpliciusculis aut iii parte su^ieriore ranii raraulive deu- 

 sioribus, nunc fere corymbosis. 



9. Eucheuma acanthociadum (Harv.) J. Ag. Epicr. p. 600, Clvrysyme- 705 

 nia acanthoclada Harv. Ner. Bor. Arner. p. 191, t. 25 (non Hy- 

 pnca acanthoclada Crouan). — Fronde tereti, inferne incrassata, 

 subcompressa et a margine adparenter pinnata, pinnis teretiusculis 

 quoquoversum sine ordine egredicntibus, elongatis, vage ramosis, iu 

 apices tenues subulatos longe attenuatis, inferioribus ramulis ab- 

 breviatis spinulseformibus divaricato-submultifidis nunc suboppo- 

 sitis, superioribus elongatis decompositis flexuosis, spinulis su- 

 bulatis. 



Hah. ad oras FIorid?e (Harvey, C. Melvill), ad insulas Barba- 

 das (Herb. J. E. Gray). — Habitus nullo moclo Chrysymenioi sed 

 potius Eucheumatis aut immo Gpacilari03 cujusdam. Fila strati 

 centralis laxiuscula. 



10. Eucheuma Gelidium (J. Ag.) Sp. H, p. 627, Epicr. p. 602, Sphccro- '"« 

 cocciis Gelidiiim J. Ag. Symb. I, p. 17, Kuetz. Sp. p. 776, Tab. 

 Phyc. XIX, t. 20, Mychodea polyacantha Crouan in Maze & 

 Schramm Alg. (iuadel. p. 164, Murray Cat. Alg. West Ind. Pi,eg. 



p. 14, Mychodea guadelupensis Crouan I. c. ?'?. — Fronde anci- 

 pite-compressa, a margine pinnatim deconiposita, pinnis distichis 

 adparenter vagis, primariis ancipitibus demum complanatis, in in- 

 feriore parte pinnulas abbreviatas parum divisas spinajformes, in 

 superiore longiores divaricato-ramosissimas corymbosas apiceque 

 rachidis corymbose congestas emittentibus, ramelUs corymborum ul- 

 timis conico-apiculatis, dcuuim obtusioribus. 



Hal). ad insulam Guadelupam ludia; Occidentalis et ad littus 

 FIorid;e. — Frons primaria 3-5 millini. lata, sursum scnsini an- 



