312 PALMELLE^. 



mucoso frondis matricalis substrate obvoluta et impedlta 

 extrlcari nequeunt et ibidem evolvuntur usque dmn tandem 

 eodem dissolute et evanido libere dissemiuantur. In primis 

 illis frons, tota vita perdurante, semper definita remanet : in 

 his primum definita quidem est, sed ab initio usque efFunditur 

 et dissolvitur. Differunt itaque Coccochlorides a Pahnellis, in 

 CO quod granula in sinu globulorum ipsorum gignuntur et 

 evolvuntur, proptereaque frons definita hie necesse inest, dum 

 illfe eodem necesse carent; et quamquam serins in multis 

 quoque Coccocliloribus frons ipsa eflfundatur, origine tamen 

 summopere ab ilia Pahnellarum diflfert. Ita ut PalmellcB Proto- 

 coccos in muco indefinite nidulantes representant, sic Cocco- 

 chlorides a Chloroaoccis in fronde mucosa definita inclusis 

 eiformata3 dici possunt." 



1. COCCOCHLORIS TROTUBERANS Sjjreiig. 



Plate LXXVI. Fig. 7., and PI. LXXXII. Figs. 6, 1, 

 8, 9, 10. 



Char. Fronds green, gelatinous, soft, irregularly lobed, spread- 

 ing, conjluent. Globules elliptical, generally more obscure 

 toioards the centre, Yesicles of vai-ious sizes, spherical or 

 elliptical, constantly surrounded icith a diap)hanous margin. 

 Ulva protuberans Smith, E. B. t. 2583. Palmella protu- 

 berans Grev., Flor. Edin. p. 323. ; Crypt. Fl. t. 243. f. 1. 

 Palmella protuberans Ag., Sjst. p. 14. ; Hook. Br. Fl. 

 vol. ii. p. 396. ; Harv. in INIanual, p. 176. Coccochloris 

 protuberans Spreng., Syst. Veg. vol. iv. p. 373. Palmo- 

 gloea protuberans Kiitzing, Phy. Gen. p. 176. 

 Hab. Sussex, spring to autumn : 3fr. Borrer. Camsle 

 Glen, near Glasgow : Sir W. J. Hooker and Dr. Greville. 

 Pentland Hills : Dr. Greville. On the ground at Crow- 

 borough Warren : Mr. Jenner. Co. Wicklow : Mr. 

 Moore. 



" The fronds in the beginning roundish, of very variable 

 magnitude, quickly run into a mass more or less extensive, 

 investing surrounding bodies or spreading over the naked soil. 



