490 Phnsozoospoi-inse, Encoenaceae, HvLlroclathrus. 



Meeresalgen p. 393, De Toni & Levi Fl. Alg. Ven. II, p. 94, 

 Anliss. Phyc. Medit. II, p. 123, Mitchell in Murr. Phyc. Memoirs 

 p. II, p. 53, t. XIV, f. 1-6, t. XV, f. 1 !, Ulva sinuosa Roth Catal. 

 bot. III, p. 327, tab. 12, fig. a, Asperococcus sinuosus Bory Moree 

 III, p. 326, J. Ag. Sp. I, p. 75, Menegh. Alg. Ital. p. 168, Encct3- 

 lium sinuosum Ag. Sp. I, p. 146 et Syst. p. 262, Kuetz. Sp. p. 

 552, Tab. Phyc. IX, t. 8, Stilophora vesicata Harv. Telfair n. 6, 

 in Hook. Journ. I, p. 147, Tremella rugulosa et cerifia Clem. 

 Ensayo p. 321, Zonaria sinuosa Ag. Syn. p. XX, Stilophora si- 

 nuosa Ag. Anfzahl. p. 17 sec. Zanardini, Nostoc mcsentericum 

 Delle Chaje Hydrophyt. Neap. t. LXXX, Ulva cavernosa Forsk. 

 Unio itin. (?), Encoelium vesicatum Kuetz. Sp. p. 552. — Fronde 

 subhemisphserica irregulariter complanata (ssepe frondibus pluribus 

 gregariis), estipitata, late expansa, bullato-sinuosa. 



Had. in mari Mediterraneo et Adriatico frequens; in Atlantico 

 calidiori, ad Gades et Tingin; ad oras Brasilite (Lund), ad « Vera 

 Cruz » Mexici (Liebma.n) et insulas Maluinas (Hooker) ; in mari 

 Rubro et oceano Indico ad « Madras »; ad insulam Franciae; in 

 oceano Pacifico ad Novam Hollandiam (Preiss), ad littora Japonia3 

 (Martens, Okamura) et Tasmanige (Hb. Zanardini). — Frons hujus 

 est initio vesicula hemisphierica, basi plana super rupes expansa, 

 in juvenili statu minuta, scnsim usque in magnitudinem capitis 

 Iiumani grandescens, varie lobata evadit atque bullosa, donec, par- 

 tibus omnibus non pari passu evolutis, frons hic illic rumpitur et 

 cxpansione circa factam lacunam continuante margines foraminis 

 involvuntur, nova foramina oriuntur usque dum denique tota frons 

 reticulatim perforata est. Sec. Zanardini I. c. frons nusquam dis- 

 rumpitur. 



HYDROCLATHRUS Bory [1826] in Dict. class. VIII, p.419(Etym. hydor 

 a(]ua et cleithron clathrus), Born. et Thur. Etud. Pliyc. p. 12, Kjellm. 

 in Engl.-Prantl Natiirl. Pflanzenfam. 86. Lief. p. 203, Mitchell 

 in Murray Phyc. Memoirs II. part., p. 56, Halodictyon Kuetz. [1843] 

 Phyc. gener. p. 336 non Zanardini. Asperococci , Fuci, StitophoiYi', 

 Enc(t'lii sp. auct. — Frons ut in gencrc Colpomenia at rcgula- 

 ritcr rciticulatim pertusa. Sporangia dennim per totam frondis su- 

 pcrficiem evoluta (nec ut in Colpomenia tantum soros macu- 

 keformes efficientia). 



1. Hydroclathrus cancellatus liory Dici. class. VIII, p. 419, Harv. 8i6 



