Contents xv 



PAGE 



Family 4. Oscillatoriacese 329 



Sub-family I. VAGINAKIE^ 330 



Schizothrix, Dasyglcea, Microcoleus 



Sub-family II. LYNGB^E^; 332 



Plectonema, Symploca, Lyngbya, Phormidium, Oscil- 

 latoria, Arthrospira, Spirulina 



Sub-order 2. TRICHOPHORE.F. . 337 



Family 1. Rivulariacese 337 



Amphithrix, Calothrix, Dichothrix, Rivularia, Glceo- 

 trichia 



Family 2. Camptotrichacese 341 



Amrnatoidea 



Order II. COCCOGONEJ3 . . 342 



Family 1. Chamaesiphoniaceae 342 



Chamsesiphon 



Family 2. Chroococcaceae 343 



Sub-family I. CHROOCYSTE^E 344 



Gloeocheete 



Sub-family II. CHROOCOCCE.E 345 



Gloeothece, Aphanothece, Synechococcus, Dactylococ- 

 co})sis, ^lei'ismopedia, Tetrapedia, Coelosphperium, 

 Gomphosphoeria, Microcystis, Glceocapsa, Aphano- 

 capsa, Porphyridium, Chroococcus 



INDEX 3">3 



ERRATA. 



Page 3, line 19, for Glaucocystids read Glaucocystidea\ 

 ,, 14, last line, after Zyguemaeere insert a semicolon. 

 ,, 165, line 12, for E. ciimatum Ehrenb. rend K. aiifatum llsilfs. 

 304, line 1, for Cymatopleura Turpin 1827, read Cymatopleura W. Sm., 



1851. 

 ,, 358 .(Index), for Dabarya read Debarya. 



