CONTENTS xi 



PAGE 



Delesseriete . 230 



SonnemaisoniecK 232 



Rhodomeleai 233 



Ceramiece 235 



CRYPTONEMIACE^E 238 



Gloiosiphoniece 238 



GrateloupiecB 238 



Dumontiece 238 



Nemastomece 238 



Rhizophyllidece 239 



Squamariece 240 



CorallinecK 241 



BANGIACE^E 246 



SUB-CLASS V. 



CYANOPHYCE^E 249 



NOSTOCACE^J 251 



Heterocystew 252 



Homocystece 255 



CHROOCOCCACE^E , 258 



ISDEX . 265 



