AFTER NATUNC IV on. H C WOOD- 



T. SmOLAin * SON, PHILADCLPHIA. 



rig. 1. STIGEOCLONIUM. 

 " 2. CHANTRANSIA EXPANSA. 



Fig. 8. CHANTRANSIA MACROSPORA. 

 " 4. SPIROQYRA QUININA. 



